LIQUID CRYSTAL DISPLAY DEVICE BEING SWITCHABLE BETWEEN TRANSMISSION MODE AND REFLECTION MODE AND DISPLAY MODULE THEREOF

Abstract

The present disclosure provides a liquid crystal display device being switchable between transmission mode and reflection mode and a liquid crystal display module thereof, the liquid crystal display module includes a liquid crystal unit and a transflective driving unit arranged in an overlapped mode; wherein, the transflective driving unit further includes: a first substrate, a first electrode layer, a first liquid layer and a second liquid layer; the first liquid layer in the electric field has the characteristics of the changeable state of spread and contraction and high light reflectance; the state of spread and contraction of the first liquid layer is changed by controlling the voltage of the first electrode layer to achieve the switching between the transmission mode and the reflection mode of the liquid crystal display module. The LCD device has the display effect of high opening, high transmissive and high reflective.

Description

FIELD OF THE DISCLOSURE

The present disclosure relates to a liquid crystal display device field, and more particularly to a liquid crystal display device being switchable between transmission mode and reflection mode and a display module thereof.

BACKGROUND OF THE DISCLOSURE

To make the LCD in the low ambient illumination of indoor and the high ambient illumination of outdoor has good display quality, a transflective LCD has been invented, the transflective LCD divides the space of the display area of the pixel to a transmissive portion and a reflective portion, generally, using the transmission mode in the low ambient illumination of indoor and using the reflection mode or the transflective mode in the high ambient illumination of outdoor. But a major problem in the transflective LCD is: the reflective electrode of the pixel reflective area is opaque, so that the ratio of the opening area of the transmissive display area is reduced and the light transmittance in the transmissive mode is very low.

SUMMARY OF THE DISCLOSURE

The embodiment of the present disclosure provides a liquid crystal display device being switchable between transmission mode and reflection mode and a display module thereof to solve the technical problem of the light transmittance of the transflective LCD device in the transmissive mode is very low in the prior art.

In order to solve the above problem, the embodiment of the present disclosure provides a liquid crystal display module being switchable between transmission mode and reflection mode, the liquid crystal display module includes a liquid crystal unit and a transflective driving unit arranged in an overlapped mode; the transflective driving unit further includes:

a first substrate;

a first electrode layer arranged on the first substrate;

a first liquid layer arranged on the first electrode layer; the first liquid layer in the electric field has the characteristics of the changeable state of spread and contraction and high light reflectance;

a second liquid layer surrounding and covering the first liquid layer; the first liquid layer is immiscible with the second liquid layer;

the state of spread and contraction of the first liquid layer is changed by controlling the voltage of the first electrode layer to achieve the switching between the transmission mode and the reflection mode of the liquid crystal display module.

According to the preferred embodiment of the present disclosure, further arranges an insulating layer between the first liquid layer and the first electrode layer, the insulating layer has an affinity for the first liquid layer.

According to the preferred embodiment of the present disclosure, part of the first electrode layer is arranged corresponding to the first liquid layer, so that the first liquid layer driven by the voltage of the first electrode layer can shrink to the non-corresponding position of the first electrode layer.

According to the preferred embodiment of the present disclosure, both ends of the first liquid layer further arranged a block, the block has an affinity for the second liquid layer.

According to the preferred embodiment of the present disclosure, the second liquid layer is transparent liquid.

According to the preferred embodiment of the present disclosure, the second liquid layer is water.

According to the preferred embodiment of the present disclosure, the first liquid layer is an oil layer containing a white pigment.

According to the preferred embodiment of the present disclosure, the liquid crystal display module further comprises a second substrate and a third substrate, the corresponding sides of the second substrate and the third substrate is arranged a second electrode layer and a third electrode layer respectively, a liquid crystal layer is arranged between the second electrode layer and the third electrode layer, the second electrode layer and the third electrode layer are used to drive the deflection of the liquid crystal in the liquid crystal layer.

According to the preferred embodiment of the present disclosure, the liquid crystal display module further comprises a first polarizer and a second polarizer arranged outside of the third substrate and the first substrate respectively.

In order to solve the above technical problem, the present disclosure further provides a liquid crystal display device being switchable between transmission mode and reflection mode including the liquid crystal display module of any one of above embodiment described.

Compared to the above technical problem, the liquid crystal display device being switchable between transmission mode and reflection mode and the display module thereof of the present disclosure provided use the state of spread and contraction of the liquid driven by the electrode to achieve the switching between the transmission mode and the reflection mode of the liquid crystal display device, and further to make the liquid crystal display device in the transmission mode and the reflection mode has the display effect of high opening, high transmissive and high reflective.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments or the prior art technical solutions embodiment of the present disclosure, it will implement the following figures for the cases described in the prior art or require the use of a simple introduction, Obviously, in the following description The drawings are only some embodiments of the present disclosure, those of ordinary skill in speaking, without creative efforts of the premise, you can also obtain other drawings based on these drawings.

Figure 1 is a schematic structure view of the preferred embodiment of the liquid crystal display module being switchable between transmission mode and reflection mode of the present disclosure;

FIG. 2 is a schematic view of the optical path of the reflective mode of the liquid crystal display module as a bright state in the FIG. 1 embodiment;

FIG. 3 is a schematic view of the optical path of the reflective mode of the liquid crystal display module as a dark state in the FIG. 1 embodiment;

FIG. 4 is a schematic view of the optical path of the transmissive mode of the liquid crystal display module as a dark state in the FIG. 1 embodiment;

FIG. 5 is a schematic view of the optical path of the transmissive mode of the liquid crystal display module as a bright state in the FIG. 1 embodiment;

FIG. 6 is a schematic structure view of the preferred embodiment of the liquid crystal display device being switchable between transmission mode and reflection mode of the present disclosure.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The accompanying drawings and the following embodiments, the present disclosure is described in further detail for. Of particular note it is for illustration only the following embodiments of the present disclosure, but not to the scope of the present disclosure will be limited. Similarly, the embodiment of the present disclosure is only part of the following examples but not all embodiments, those of ordinary skill in making all other embodiments no creative effort obtained, are within the scope of the present disclosure to protect.

Please refer to FIG. 1, FIG. 1 is a schematic structure view of the preferred embodiment of the liquid crystal display module being switchable between transmission mode and reflection mode of the present disclosure, the liquid crystal display module includes but not limited a liquid crystal unit 200 and a transflective driving unit 100 arranged in an overlapped mode.

In particular, the transflective driving unit 100 includes a first substrate 110, a first electrode layer 120, a first liquid layer 130, a second liquid layer 140, an insulating layer 150 and a block 160.

The first electrode layer 120 is arranged on the first substrate 110, the insulating layer 150 is arranged on the first electrode layer 120, preferably, the insulating layer 150 has an affinity for the first liquid layer 130 to make the first liquid layer 130 in the case of the first electrode layer 120 without applied voltage can be well expanded. The first liquid layer 130 is arranged on the insulating layer 150, further the first liquid layer 130 in the electric field has the characteristics of the changeable state of spread and contraction and high light reflectance, preferably, the first liquid layer 130 is an oil layer containing a white pigment. This material can be well reflected light, further the state of spread and contraction can be changed in the driven field of the first electrode layer 120.

Wherein, part of the first electrode layer 120 is arranged corresponding to the first liquid layer 130, so that the first liquid layer 130 driven by the voltage of the first electrode layer 120 can shrink to the non-corresponding position of the first electrode layer 120, the specific driving principle and procedure will be described in detail in the subsequent content.

The second liquid layer 140 surrounds and covers the first liquid layer 130, the first liquid layer 130 is immiscible with the second liquid layer 140. Preferably, the second liquid layer 140 is transparent liquid, more preferably is water. The block 160 is arranged both ends of the first liquid layer 130, and the block 160 has an affinity for the second liquid layer 140, i.e. Hydrophilic. The characteristic of the embodiment of the present disclosure is controls the state of spread and contraction of the first liquid layer 130 by the first electrode layer 120 to achieve the switching between the transmission mode and the reflection mode of the liquid crystal display module.

The liquid crystal unit 200 includes a second substrate 210 and a third substrate 220, the corresponding sides of the second substrate 210 and the third substrate 220 are arranged a second electrode layer 230 and a third electrode layer 240 respectively, a liquid crystal layer 250 is arranged between the second electrode layer 230 and the third electrode layer 240, the second electrode 230 and the third electrode layer 240 are used to drive the deflection of the liquid crystal in the liquid crystal layer 250. Wherein, the liquid crystal layer 250 is aligned by the vertical alignment.

Further, the liquid crystal display module further includes a first polarizer 310 and a second polarizer 320, the first polarizer 310 and the second polarizer 320 are arranged outside of the third substrate 220 and the first substrate 110 respectively.

It notes that, the electrode layer, the substrate, the insulating etc. of the present embodiment are made by transparent material, so that light can pass through.

The following control method and principle of the present disclosure will be described in detail.

The Reflection mode and transmission mode switching scheme is as follows: the spread and contraction of the first liquid layer 130 in the transflective driving unit 100 controlled by the first electrode layer 120 applied voltage. Because the first liquid layer 130 contains a white pigment, can be well reflected light performance as a reflective layer, and this state of the display device is reflection mode; after the first electrode layer 120 applying voltage, the first liquid layer 130 will be shrunk, and the display device is transmission mode.

The principle of the reflection mode is as follows: please refer to FIG. 2 and FIG. 3, FIG. 2 is a schematic view of the optical path of the reflective mode of the liquid crystal display module as a bright state in the FIG. 1 embodiment, FIG. 3 is a schematic view of the optical path of the reflective mode of the liquid crystal display module as a dark state in the FIG. 1 embodiment. The first electrode layer 120 remains close state, the first liquid layer 130 in the transflective driving unit 100 is spreading state. The voltage difference between the pair of electrodes is formed by controlling the second electrode layer 230 and the third electrode 240 to rotate the liquid crystal in the liquid crystal unit 200 and control the level of light reflectance. When the voltage difference between the second electrode layer 230 and the third electrode layer 240 is 0, the liquid crystal molecules are vertically aligned, the ambient light enters in the liquid crystal unit 200 through the first polarizer 310, and the liquid crystal layer 250 does not generate the effect of the polarization to light, after reflecting the first liquid layer 130 can through the first polarizer 310, the liquid crystal display device is performance as a bright state; when applying a certain voltage difference between the second electrode layer 230 and the third electrode layer 240, the liquid crystal molecules is rotating, and the incident and the reflected light generating polarization transition to achieve the low reflectance state of light, i.e. the dark state of the reflection mode. The arrow in the figure indicates the propagation of light in the environment.

The principle of the transmission mode is as follows: please refer to FIG. 4 and FIG. 5, FIG. 4 is a schematic view of the optical path of the transmissive mode of the liquid crystal display module as a dark state in the FIG. 1 embodiment, FIG. 5 is a schematic view of the optical path of the transmissive mode of the liquid crystal display module as a bright state in the FIG. 1 embodiment. The first electrode layer 120 remains open state, the first liquid layer 130 in the transflective driving unit 100 is shrink state. In this case, the liquid crystal display device is performance as a transmissive display device.

The voltage difference between the pair of electrodes is formed by controlling the second electrode layer 230 and the third electrode 240 to rotate the liquid crystal in the liquid crystal unit 200 and control the back light pass rates. When the voltage difference between the second electrode layer 230 and the third electrode layer 240 is 0, the liquid crystal molecules are vertically aligned, the back light enters in the liquid crystal unit 200 through the second polarizer 320, and the liquid crystal layer 250 does not generate the effect of the polarization to light, because the existence of the first polarizer 310, the emitted light is less, in this case, the liquid crystal display is performance as a dark state; when applying a certain voltage difference between the second electrode layer 230 and the third electrode layer 240, the liquid crystal molecules is rotating, and the incident back light through the second polarizer 320 is generating polarization transition to achieve the same purpose of the polarization direction of the first polarizer 310, thereby increasing the pass rate of the back light and the performance of the liquid crystal display device as bright state. The arrow in the figure indicates the propagation of light in the environment.

Additionally, the embodiment of the present disclosure further provides a liquid crystal display device being switchable between transmission mode and reflection mode, please refer to FIG. 6, FIG. 6 is a schematic structure view of the preferred embodiment of the liquid crystal display device being switchable between transmission mode and reflection mode of the present disclosure. Wherein, the liquid crystal display device includes a case 8 and the liquid crystal display module in the above embodiment arranged in the case 8. About LCD modules, please refer to the technical features of the above embodiments described in detail, while the rest of the technical features of the structure of a liquid crystal display, in understanding the scope of the skilled person, also will not repeat them here.

Compared to the prior art, the liquid crystal display device being switchable between transmission mode and reflection mode and the display module thereof of the present disclosure provided, using the state of spread and contraction of the electrode driving liquid to achieve the switching between the transmission mode and the reflection mode of the liquid crystal display device, and further to make the liquid crystal display device in the transmission mode and the reflection mode has the display effect of high opening, high transmissive and high reflective.

Above are only embodiments of the present disclosure is not patented and therefore limit the scope of the disclosure, all the contents of the present disclosure utilize the specification made equivalent structures or equivalent process transformation, either directly or indirectly related technologies used in other areas are included in the patent empathy scope of the disclosure.

Claims

1. A liquid crystal display module being switchable between transmission mode and reflection mode, wherein, the liquid crystal display module comprises a liquid crystal unit and a transflective driving unit arranged in an overlapped mode; the transflective driving unit further comprises: a first substrate;a first electrode layer arranged on the first substrate;a first liquid layer arranged on the first electrode layer; the first liquid layer in the electric field has the characteristics of the changeable state of spread and contraction and high light reflectance;a second liquid layer surrounding and covering the first liquid layer; the first liquid layer is immiscible with the second liquid layer;the state of spread and contraction of the first liquid layer is changed by controlling the voltage of the first electrode layer to achieve the switching between the transmission mode and the reflection mode of the liquid crystal display module.

2. The liquid crystal display module according to claim 1, wherein, further arranges an insulating layer between the first liquid layer and the first electrode layer, the insulating layer has an affinity for the first liquid layer.

3. The liquid crystal display module according to claim 2, wherein, part of the first electrode layer is arranged corresponding to the first liquid layer, so that the first liquid layer driven by the voltage of the first electrode layer can shrink to the non-corresponding position of the first electrode layer.

4. The liquid crystal display module according to claim 1, wherein, both ends of the first liquid layer further arranged a block, the block has an affinity for the second liquid layer.

5. The liquid crystal display module according to claim 1, wherein, the second liquid layer is transparent liquid.

6. The liquid crystal display module according to claim 5, wherein, the second liquid layer is water.

7. The liquid crystal display module according to claim 1, wherein, the first liquid layer is an oil layer containing a white pigment.

8. The liquid crystal display module according to claim 8, wherein, the liquid crystal display module further comprises a second substrate and a third substrate, the corresponding sides of the second substrate and the third substrate is arranged a second electrode layer and a third electrode layer respectively, a liquid crystal layer is arranged between the second electrode layer and the third electrode layer, the second electrode layer and the third electrode layer are used to drive the deflection of the liquid crystal in the liquid crystal layer.

9. The liquid crystal display module according to claim 8, wherein, the liquid crystal display module further comprises a first polarizer and a second polarizer arranged outside of the third substrate and the first substrate respectively.

10. A liquid crystal display device being switchable between transmission mode and reflection mode, wherein, the liquid crystal display device comprises the liquid crystal display module as claimed in claim 1.