This application claims the priority benefit of Taiwanese application no. 110122714, filed on Jun. 22, 2021. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
The disclosure relates to an optoelectronic apparatus, and particularly relates to a display apparatus.
Among automobile products sold at present, dashboards and control systems are mostly integrated with touch display panels. During driving, if a driver keeps staring at a screen to confirm key positions, it is likely to cause safety concerns. If the touch display panel has haptic feedback which allows the driver to sense a “feedback force” when touching the screen with a finger to provide confirmation of a click position, the driver accordingly does not need to move his line of sight during driving, and driving safety can thus be ensured.
In order to realize the haptic feedback, an ultrasonic vibration technology has been developed, and such technology allows users to have “smooth” and “rough” haptic sensations on the originally cold and rigid touch display panel. Using an ultrasonic wave to vibrate the touch display panel may produce a high-pressure air film between a finger tip and a surface of the touch display panel due to a squeeze film effect. As a result, friction sensed by the finger is reduced. In this way, a smoother haptic sensation of the touch display panel than the haptic sensation before the vibration may be created. If an ultrasonic vibration source is switched back and forth quickly between on and off, the user may sense alternation of low friction and high friction when sliding over the touch display panel with the finger, which may thus create the rough haptic sensation.
The disclosure provides a display apparatus with a better performance.
The disclosure provides a display apparatus including a display panel, a sealant, a haptic plate, a vibration source, a buffer layer, and a plurality of supports. The sealant is disposed on the display panel. The haptic plate is disposed on the sealant. The sealant and the haptic plate define an accommodating space. The vibration source is connected to the haptic plate. The vibration source is adapted to vibrate to generate an ultrasonic wave on the haptic plate. The buffer layer is disposed between the haptic plate and the display panel. The buffer layer includes a liquid, and the liquid is disposed within the accommodating space. The supports are disposed between the haptic plate and the display panel. The ultrasonic wave has a node distribution on the haptic plate, and the supports are disposed corresponding to the node distribution.
In an embodiment of the disclosure, the supports and the node distribution are at least partially overlapped.
In an embodiment of the disclosure, the display panel has a light-shielding pattern layer, the light-shielding pattern layer and the node distribution have an intersection area, and the supports and the intersection area are at least partially overlapped.
In an embodiment of the disclosure, a viscosity coefficient of the liquid falls within a range of 0.65 mPa.s to 100 mPa.s.
In an embodiment of the disclosure, a refractive index of the liquid falls within a range of 1.4 to 1.8.
In an embodiment of the disclosure, the display apparatus further includes a housing and an elastic member. The display panel is disposed in the housing. The elastic member is connected to the haptic plate and the housing.
In an embodiment of the disclosure, the haptic plate has an inner surface facing the display panel, an outer surface facing away from the display panel, and a side wall connecting the inner surface and the outer surface, and the elastic member is connected to the side wall of the haptic plate and the housing.
In an embodiment of the disclosure, the haptic plate has an inner surface facing the display panel, an outer surface facing away from the display panel, and a side wall connecting the inner surface and the outer surface, and the elastic member is connected to the inner surface of the haptic plate and the housing.
In an embodiment of the disclosure, the haptic plate has an inner surface facing the display panel, an outer surface facing away from the display panel, and a side wall connecting the inner surface and the outer surface, the elastic member is disposed on the outer surface of the haptic plate, and the elastic member is connected to the housing and the outer surface of the haptic plate.
In an embodiment of the disclosure, the display apparatus further includes a touch sensing structure disposed on the haptic plate.
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.
Reference will now be made in detail to the exemplary embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
It will be understood that when a component such as a layer, a film, a region, or a substrate is referred to be “on” or “connected to” another component, it may be directly on or connected to the another component, or intermediate components may also exist. Comparatively, when a component is referred to be “directly on” or “directly connected” to another component, other intermediate component does not exit. As used herein, the term “connection” may refer to physical and/or electrical connection. Furthermore, the term “electrical connection” or “coupling” of two components may encompass a case where other components exist between the two components.
The term “about”, “approximate”, or “substantial” used herein includes a stated value and an average value within an acceptable deviation range from a specific value determined by those with ordinary skills in the art while considering the discussed measurement and a specific number of errors associated with the measurement (i.e. limits of a measurement system). For example, the term “about” may represent being within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, and ±5%. Moreover, an acceptable deviation range or standard deviation may be selected for the term “about”, “approximate” or “substantial” used herein based on optical properties, etching properties, or other properties without using one standard deviation for all properties.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
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For example, in the embodiment, the display medium 140 may be a non-self-luminous material (for example, but not limited to: liquid crystal), and the display module LCM′ further includes a backlight module 200′ disposed under the display panel 100′. However, the disclosure is not limited thereto. In other embodiments, the display medium 140 may also be a self-luminous material (for example, but not limited to: an organic electroluminescent layer, a plurality of micro light-emitting diodes, etc.), and the display module LCM′ may also not include the backlight module 200′.
In the embodiment, the display panel 100′ further includes a light-shielding pattern layer 150. The light-shielding pattern layer 150 includes a plurality of longitudinal light-shielding portions (not shown) and a plurality of lateral light-shielding portions 152. The plurality of longitudinal light-shielding portions (not shown) and the plurality of lateral light-shielding portions are intersected to define a plurality of openings 150a, where the plurality of openings 150a are respectively overlapped with a plurality of pixel electrodes (not shown) of the pixel array layer 120.
For example, in the embodiment, the pixel array layer 120 and the light-shielding pattern layer 150 may be selectively disposed on the two opposite substrates (i.e., the first substrate 110 and the second substrate 130), respectively. However, the disclosure is not limited thereto. In other embodiments, the pixel array layer 120 and the light-shielding pattern layer 150 may also be disposed on the same substrate (for example, the first substrate 110).
In the embodiment, the display panel 100′ may further selectively include a color filter layer 160 and a passivation layer 170 covering the color filter layer 160, where the color filter layer 160 includes a plurality of color filter patterns 162, which are respectively overlapped with the plurality of openings 150a of the light-shielding pattern layer 150. For example, in the embodiment, the pixel array layer 120 and the color filter layer 160 may be selectively disposed on the two opposite substrates (i.e., the first substrate 110 and the second substrate 130), respectively. However, the disclosure is not limited thereto. In other embodiments, the pixel array layer 120 and the color filter layer 160 may also be disposed on the same substrate (for example, the first substrate 110).
The display apparatus 10′ further includes a sealant 600′, which is disposed on the display panel 100′, located outside the display panel 100′, and defines an accommodating space R′. The display apparatus 10′ further includes a buffer layer 700′, where the buffer layer 700′ includes a liquid, and the liquid is disposed in the accommodating space R′ defined by the sealant 600′. The display apparatus 10′ further includes a haptic plate 300′ disposed on the sealant 600′, where the buffer layer 700′ is disposed between the haptic plate 300′ and the display panel 100′.
In the embodiment, the liquid of the buffer layer 700′ has a low viscosity coefficient. For example, the viscosity coefficient of the liquid of the buffer layer 700′ may fall within a range of 0.65 mPa.s to 100 mPa.s, but the disclosure is not limited thereto. In the embodiment, a refractive index of the liquid of the buffer layer 700′ is the same as or similar to a refractive index of the haptic plate 300′ and/or a refractive index of the second substrate 130 of the display panel 100′. For example, in the embodiment, a material of the haptic plate 300′ and a material of the second substrate 130 of the display panel 100′ may be glass, a refractive index of glass is about 1.55, and the refractive index of the liquid of the buffer layer 700′ may fall within a range of 1.4 to 1.8, but the disclosure is not limited thereto. In the embodiment, the liquid of the buffer layer 700′ is, for example, oil, but the disclosure is not limited thereto.
The display apparatus 10′ further includes a vibration source 400′, which is connected to the haptic plate 300′, where the vibration source 400′ is adapted to vibrate, so that an ultrasonic wave S′ is formed on the haptic plate 300′. For example, in the embodiment, the vibration source 400′ may include a plurality of vibration elements 410′. The vibration elements 410′ are, for example, piezoelectric ceramics, but the disclosure is not limited thereto.
In the embodiment, the display apparatus 10′ may further selectively include a touch sensing structure TS, where the touch sensing structure TS may be selectively disposed on the haptic plate 300′. For example, in the embodiment, the touch sensing structure TS may be selectively disposed on an inner surface 300a of the haptic plate 300′. However, the disclosure is not limited thereto, and in another embodiment, the touch sensing structure TS may also be disposed on an outer surface 300b of the haptic plate 300′. In addition, the disclosure does not limit the touch sensing structure TS to be must disposed on the haptic plate 300′, and in another embodiment, the touch sensing structure TS may also be disposed in the display panel 100′ and/or outside the display panel 100′ . Furthermore, the disclosure does not limit the display apparatus to must include the touch sensing structure TS, and in another embodiment, the display apparatus may not include the touch sensing structure TS.
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A difference between the display apparatus 10 of the embodiment and the aforementioned display apparatus 10′ is that the display apparatus 10 of the embodiment further includes the plurality of supports 500 for maintaining a space between the haptic plate 300 and the display panel 100. Referring to
It should be noted that since the buffer layer 700 is disposed between the haptic plate 300 and the display panel 100, and the buffer layer 700 includes liquid, when the ultrasonic wave is formed on the surface of the haptic plate 300 along with the vibration of the vibration source 400, the ultrasonic wave S is not easy to be absorbed, and the display apparatus 10 has a good haptic feedback effect. At the same time, since interface reflection of the buffer layer 700, the haptic plate 300 and/or the display panel 100 is less, the display apparatus 10 may further have a good display effect while having the good haptic feedback effect.
In addition, in the embodiment, when a finger (not shown) of the user presses the haptic plate 300, the supports 500 may prevent the haptic plate 300 from bending down excessively and excessively squeezing the buffer layer 700, so that a shape of the buffer layer 700 will not be excessively changed to affect the display effect of the display apparatus 10.
Moreover, in the embodiment, since positions of the supports 500 and the node distribution ND are overlapped, the arrangement of the supports 500 does not excessively affect the vibration of the haptic plate 300, and the display and haptic feedback effect of the display apparatus 10 are even better.
It should be noticed that reference numbers of the components and a part of contents of the aforementioned embodiment are also used in the following embodiment, where the same reference numbers denote the same or like components, and descriptions of the same technical contents are omitted. The aforementioned embodiment may be referred for descriptions of the omitted parts, and detailed descriptions thereof are not repeated in the following embodiment.
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In addition, another difference between the display apparatus 10A of
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Number | Date | Country | Kind |
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110122714 | Jun 2021 | TW | national |