1. Field of the Invention
The present invention relates to the field of liquid crystal displaying, and in particular to a structure of a curved liquid crystal panel.
2. The Related Arts
Liquid crystal displays (LCDs) have a variety of advantages, such as thin device body, low power consumption, and being free of radiation, and are thus of wide applications, such as liquid crystal televisions, mobile phones, personal digital assistants (PDAs), digital cameras, computer monitors, and notebook computer screens.
A liquid crystal display generally comprises an enclosure, a liquid crystal panel arranged in the enclosure, and a backlight module mounted in the enclosure. The liquid crystal panel has a structure that is generally composed of a thin-film transistor (TFT) array substrate, a color filter (CF) substrate, and a liquid crystal layer arranged between the two substrates and the principle thereof is that a driving voltage is applied to the two glass substrates to control rotation of liquid crystal molecules of the liquid crystal layer in order to refract out light emitting from the backlight module to generate an image.
Recently, with the progress of the liquid crystal displaying technology, major manufacturers have marketed curved liquid crystal displays one after another. Generally speaking, the curved liquid crystal displays allow for the best viewing effect from edge to edge, while a regular liquid crystal display has poor capability of displaying at edges of a screen. The curved liquid crystal displays have a screen that is entirely of a curved design to provide a wide full-view image, allowing for the same visual enjoyment at both the central portion and the peripheral portion of the screen and also reducing distortion of off-axis viewing for viewing at a short distance. Further, the curved liquid crystal displays allow a viewer's viewing distance to be extended, achieving better experience of viewing. Thus, compared to the regular liquid crystal displays, the curved liquid crystal displays have advantages, including: (1) brand differentiating, (2) wider viewable angle, and (3) reducing distortion for short distance viewing.
A curved liquid crystal panel is a core constituent component of a curved liquid crystal display. A conventional curved liquid crystal panel has a structure as shown in
An object of the present invention is to provide a structure of a curved liquid crystal panel, which achieves a uniform cell thickness for the entirety of a liquid crystal plane and a uniform distribution of thickness of a liquid crystal layer, thereby making light transmittance and response time consistent and thus enhancing the optical taste of the curved liquid crystal panel.
To achieve the above object, the present invention provides a curved liquid crystal panel structure, which comprises: a thin-film transistor (TFT) substrate, a color filter (CF) substrate opposite to the TFT substrate, spacers arranged between the TFT substrate and the CF substrate, a liquid crystal layer disposed between the TFT substrate and the CF substrate, and an enclosing sealant layer arranged between and located along a periphery of the TFT substrate and the CF substrate, wherein in a curving direction of the curved liquid crystal panel, the CF substrate comprises a middle zone and two side edge zones at two opposite sides of the middle zone. The middle zone bears a stress greater than stresses born by the two side edge zones. The ones of the spacers that are located in the middle zone are arranged to bear a stress that is greater than stresses born by the ones of the spacers that are located in the two side edge zones so as to maintain a constant distance between the CF substrate and the TFT substrate.
The spacers that are located in the middle zone have heights that are greater than heights of the spacers located in the two side edge zones.
The heights of the spacers located in the middle zone are gradually reduced from a center toward two opposite sides in the curving direction of the curved liquid crystal panel.
The heights of the spacers of each of the side edge zones are gradually reduced from a side adjacent to the middle zone toward an opposite side in the curving direction of the curved liquid crystal panel or the heights of the spacers located in each of the side edge zones are substantially identical.
The spacers located in the middle zone are distributed in a density that is greater than densities of the spacers distributed in the two side edge zones.
The density of the spacers located in the middle zone is gradually reduced from a center toward opposite sides in the curving direction of the curved liquid crystal panel.
The density of the spacers located in each of the side edge zones is gradually reduced from a side adjacent to the middle zone toward an opposite side in the curving direction of the curved liquid crystal panel or the density of the spacers located in each of the side edge zones is substantially constant.
Critic dimensions of the spacers located in the middle zone are greater than critic dimensions of the spacers located in the two side edge zones.
The critic dimensions of the spacers located in the middle zone are gradually reduced from a center toward opposite sides in the curving direction of the curved liquid crystal panel.
The critic dimensions of the spacers located in each of the side edge zones are gradually reduced from a side adjacent to the middle zone toward an opposite side in the curving direction of the curved liquid crystal panel or the critic dimensions of the spacers located in each of the side edge zones are substantially identical.
The present invention also provides a curved liquid crystal panel structure, which comprises: a TFT substrate, a CF substrate opposite to the TFT substrate, spacers arranged between the TFT substrate and the CF substrate, a liquid crystal layer disposed between the TFT substrate and the CF substrate, and an enclosing sealant layer arranged between and located along a periphery of the TFT substrate and the CF substrate, wherein in a curving direction of the curved liquid crystal panel, the CF substrate comprising a middle zone and two side edge zones at two opposite sides of the middle zone, the middle zone bearing a stress greater than stresses born by the two side edge zones, the ones of the spacers that are located in the middle zone being arranged to bear a stress that is greater than stresses born by the ones of the spacers that are located in the two side edge zones so as to maintain a constant distance between the CF substrate and the TFT substrate;
wherein the spacers that are located in the middle zone have heights that are greater than heights of the spacers located in the two side edge zones;
wherein the heights of the spacers located in the middle zone are gradually reduced from a center toward two opposite sides in the curving direction of the curved liquid crystal panel; and
wherein the heights of the spacers of each of the side edge zones are gradually reduced from a side adjacent to the middle zone toward an opposite side in the curving direction of the curved liquid crystal panel or the heights of the spacers located in each of the side edge zones are substantially identical.
The efficacy of the present invention is that the present invention provides a structure of a curved liquid crystal panel, which uses an arrangement that the heights of the spacers located within a middle zone are greater than those of the spacers of two side edge zones, or the density of the spacers located within the middle zone is greater than the density of the spacers of the two side edge zones, or the critic dimensions of the spacers located within the middle zone are greater than those of the spacers of the two side edge zones to make the spacers located within the middle zone bear a stress greater than that of the spacers located within the two side edge zones, whereby the CF substrate and the TFT substrate may maintain a constant distance therebetween and thus the consistency of cell thickness in the entirety of the curved liquid crystal panel is achieved, the distribution of thickness of a liquid crystal layer is uniform, light transmittance and response time are made constant, and the optical taste of the curved liquid crystal panel is enhanced. The structure is simple and can be easily achieved.
For better understanding of the features and technical contents of the present invention, reference will be made to the following detailed description of the present invention and the attached drawings. However, the drawings are provided for the purposes of reference and illustration and are not intended to impose limitations to the present invention.
The technical solution, as well as other beneficial advantages, of the present invention will be apparent from the following detailed description of embodiments of the present invention, with reference to the attached drawing. In the drawing:
To further expound the technical solution adopted in the present invention and the advantages thereof, a detailed description is given to a preferred embodiment of the present invention and the attached drawings.
Referring to
The CF substrate 3 comprises a middle zone 31 and two side edge zones 33 at two opposite sides of the middle zone. Since when the curved liquid crystal panel is curved, a relative sliding movement is generated between the TFT substrate 1 and the CF substrate 3, the curved liquid crystal panel induces stresses for leftward and rightward sliding with respect to a reference point defined by a center thereof. The stresses are gradually reduced from the center toward the two side edges. Further, the stresses resulting from mutual compression between the TFT substrate 1 and the CF substrate 3 are also gradually reduced from the center toward the two side edges. Thus, the middle zone 31 bears a stress that is greater than those of the two side edge zones 33. The spacers 51 that are located within the middle zone 31 must be arranged to bear a stress that is greater than those born by the spacers 53 located within the two side edge zones 33 and then, the distance between the CF substrate 3 and the TFT substrate 1 can be kept consistent to thereby ensure a consistent cell thickness in the entirety of the curved liquid crystal panel.
In the first embodiment, the spacers 5 arranged between the TFT substrate 1 and the CF substrate 3 comprise the spacers 51 that are located within the middle zone 31 and the spacers 53 that are located within the two side edge zones 33 and the spacers 51 that are located within the middle zone 31 have heights that are greater than those of the spacers 53 located within the two side edge zones 33. Further, the heights of the spacers 51 within the middle zone 31 are gradually reduced from the center to the two side edges in a curving direction of the curved liquid crystal panel in order to accommodate the gradual reduction of the stresses from the center toward the two side edges. The heights of the spacers 53 within each of the side edge zones 33 are gradually reduced from the side adjacent to the middle zone 31 toward the opposite side in the curving direction of the curved liquid crystal panel, or alternatively, the heights of the spacers 53 within each of the side edge zones 33 are identical. And it is preferred that the heights of the spacers 53 within each of the side edge zones 33 are gradually reduced from the side adjacent to the middle zone 31 toward the opposite side in the curving direction of the curved liquid crystal panel. After the curved liquid crystal panel is curved, the stress born by and the extent of compression of the middle portions of the TFT substrate 1 and the CF substrate 3 are greater than the stress born by and the extent of compression of the two side edge portions of the TFT substrate 1 and the CF substrate 3. However, in the first embodiment, the heights of the spacers 51 within the middle zone 31 are arranged to be greater than the heights of the spacers 53 within the two side edge zones 33, so that the spacers 51 of the middle zone 31 may bear a stress greater than that born by the spacers 53 of the two side edge zones 33, whereby the CF substrate 3 and the TFT substrate 1 may maintain a constant distance therebetween and consistent cell thickness can be achieved in the entirety of the curved liquid crystal panel.
Referring to
Referring to
It is noted here that the arrangements of the spacers 5 provided in the first, second, and third embodiments can be combined with each other in order to provide a better support to the TFT substrate 1 and the CF substrate 3 to ensure the consistency of the cell thickness in the entirety of the curved liquid crystal panel.
In summary, the present invention provides a structure of a curved liquid crystal panel, which uses an arrangement that the heights of the spacers located within a middle zone are greater than those of the spacers of two side edge zones, or the density of the spacers located within the middle zone is greater than the density of the spacers of the two side edge zones, or the critic dimensions of the spacers located within the middle zone are greater than those of the spacers of the two side edge zones to make the spacers located within the middle zone bear a stress greater than that of the spacers located within the two side edge zones, whereby the CF substrate and the TFT substrate may maintain a constant distance therebetween and thus the consistency of cell thickness in the entirety of the curved liquid crystal panel is achieved, the distribution of thickness of a liquid crystal layer is uniform, light transmittance and response time are made constant, and the optical taste of the curved liquid crystal panel is enhanced. The structure is simple and can be easily achieved.
Based on the description given above, those having ordinary skills of the art may easily contemplate various changes and modifications of the technical solution and technical ideas of the present invention and all these changes and modifications are considered within the protection scope of right for the present invention.
Number | Date | Country | Kind |
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201410219976.8 | May 2014 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2014/079712 | 6/12/2014 | WO | 00 |