TWM451596U - Touch display device with birefringence structure - Google Patents

Description

Touch display device with birefringence structure

The present invention relates to a touch display device, in particular to a double-refractive crystal with a polarizing layer instead of a glass as a protective cover, so that a light emitted by a display module forms a circularly polarized light or an elliptically polarized light. A touch display device of a refractive structure.

According to the polarizing plate, the polarized light is polarized by the natural light that is not polarized, that is, the natural light that occurs randomly in all directions when the original electromagnetic wave travels, and the polarization of the electromagnetic vibration occurs only in one plane after passing through the polarizing plate. Light. The linear polarizing plates have a biasing direction, and only allow the light of the electric field to vibrate in a direction parallel to the direction in which the polarizing direction passes, and the linearly polarized light generated by the linear polarizing plate has a fixed electric field direction, which is called the polarization direction of the light, and the line The polarized light cannot pass through a linear polarizing plate whose polarization direction is perpendicular to its polarization direction.

The liquid crystal display utilizes this principle to provide linear polarizing plates perpendicular to each other on the upper and lower sides of the liquid crystal layer. Without an applied electric field, the natural alignment of the liquid crystal molecules can be guided by the polarization of the first linear polarizing plate. The polarization direction of the linearly polarized light is rotated by 90 degrees, and the second linear polarizing plate can be passed. The applied electric field changes the arrangement of the liquid crystal molecules in the liquid crystal layer, and affects the polarization direction of the last linearly polarized light and the polarization direction of the second linear polarizing plate. Between the angles, the light component whose polarization direction is perpendicular to the direction in which the second linear polarizer is deflected may not pass through the second linear polarizer, and only the light component whose polarization direction is parallel to the direction in which the second linear polarizer is deflected will be revealed. Therefore, different shades can be produced.

However, with the advancement of technology, in the past, sunglasses absorb dimming to resist strong sunlight. The manner of irradiation is gradually replaced by the technique of polarizing the incident light by the linear polarizer, and the intensity of the emitted light is greatly attenuated, and when the user wears the display device with the polarized light of the linear polarizing plate to view the polarized light, When the polarization direction of the linearly polarized light emitted by the display device is perpendicular to the direction of polarization of the polarizing plate of the sunglasses, the screen of the display device is unrecognizable, and when the polarization direction of the linearly polarized light is at an angle with the direction of polarization of the linear polarizing film, There will also be some light components that cannot pass through the linear polarizer, and the visibility of the display device is lowered. Therefore, the method of adding a wavelength retarder outside the linear polarizer is developed, and the light emitted from the display device is transmitted through the wavelength retarder. The polarized light is converted into circularly polarized or elliptically polarized light. Since the circular polarized light or the elliptically polarized light has a high transmittance to the linear polarizing plate, the problem that the above display device cannot pass through the sunglasses or the visibility is poor can be avoided.

Another common application mode of the linear polarizing film is that it is disposed in a general small-and-small (touch) display device, and the wavelength retarder disposed inside the linear polarizing plate converts the incident natural light sequentially through the linear polarizing plate and the wavelength retarder into Circularly polarized or elliptically polarized light, since the circularly polarized or elliptically polarized light is reflected by the interface between the elements in the display device, the direction of rotation is opposite to the incident light, and after the original wavelength retarder, the line whose polarization direction is perpendicular to the direction of polarization of the linear polarizer Since the polarized light cannot pass through the linear polarizing plate, the amount of reflected light can be reduced, the interference of the light emitted from the display device itself can be reduced, and the visibility in a strong light environment can be improved.

Therefore, commercially available (touch) display devices are often provided with a wavelength retarder disposed outside the linear polarizer to convert the emitted light into circularly polarized light, and a wavelength retarder disposed inside the linear polarizer to reduce reflected light or in a line. A wavelength retarder is disposed inside and outside the polarizing plate to simultaneously convert the outgoing light into circularly polarized light and reduce the interference of the reflected light. However, the more the number of the linear polarizing plate and the wavelength retarding film to be disposed, the thicker the thickness and the cost. The higher the light utilization rate.

In view of this, the creator of the present creation replaces the glass protective cover of the conventional touch display device with a double-refraction crystal, and the birefringent crystal can convert the linearly polarized light into a circularly polarized or elliptically polarized light at a suitable thickness. When the refractive crystal replaces the glass as a protective cover, one of the four can be omitted. By setting the one-wavelength retarder, the thickness of the display device can be reduced, the cost of the display device can be reduced, and the utilization of light can be improved while retaining the conversion of the emitted light into circularly polarized light or reducing the interference of the reflected light, and The refractive crystal has a high hardness and excellent scratch resistance, and as the outermost cover lens, the application of the surface hardened resin layer can be omitted.

Therefore, the creator of this creator has developed a solution based on the fact that the problem of the prior art is lacking and the ideal, and hopes to develop a more convenient, practical and economical double. The touch display device of the refractive structure promotes the development of the society, and the creation of the creation is caused by the concept of a long time.

The purpose of the present invention is to provide a touch display device with a birefringent structure, which is formed by replacing a glass with a birefringent crystal, and the circular light is polarized or elliptical when the light emitted from the display device passes through the birefringent crystal. The polarized light is emitted, and the visibility of the display device through a lens having a linear polarizing plate can be improved, and the anti-scratch and anti-glare effects can be achieved, thereby reducing the number of polarizing elements and the thickness of the display device. Thinning, increasing the intensity of outgoing light and reducing costs.

For the purpose of the above, the present invention provides a touch display device having a birefringent structure, comprising a display module, a protective cover and a touch module, the protective cover comprising a polarizing layer and a crystal The layer is disposed on the protective cover, and the display module is configured to generate a circularly polarized light or an elliptically polarized light after the light is emitted through the protective cover. The touch module is disposed on the protective cover. It becomes an out-cell touch display device.

In order to achieve the above object, the present invention further provides a touch display device having a birefringent structure, which comprises a display module, a protective cover and a touch module, and the protective cover includes a polarizing layer and a crystal layer covering the display module, and causing the display module to generate a circularly polarized light or an elliptically polarized light after the emitted light passes through the protective cover, the touch mode The group is set in the display module. The touch module is disposed on the side of the display module adjacent to the protective cover, and is an on-cell touch display device; the touch module is disposed on the touch mode An in-cell touch display device is disposed on the side of the protective cover. The touch module includes a first electrode and a second electrode respectively disposed on the display module. The insulator between the first electrode and the second electrode is an in-cell/on-cell hybrid touch display device.

Wherein, the crystal layer is a sapphire glass layer or a birefringent crystal layer such as a quartz glass layer, and the crystal axis of the sapphire glass layer may be a C axis, an M axis, an A axis or an R axis; the display module may be a The liquid crystal display module, a light emitting diode display module or an organic light emitting diode display module.

The polarizing layer can be a linear polarizing plate, and the linear polarizing film is disposed between the display module and the crystal layer, so that the emitted light of the display module sequentially passes through the linear polarizing plate and the crystal layer to form a circular polarization. Light or an elliptically polarized light, or the polarizing layer may be a circular polarizing plate comprising a linear polarizing plate and a quarter-wave retarder, and the linear polarizing plate is disposed at the quarter-wave retardation Between the sheet and the crystal layer, the emitted light of the display module passes through the linear polarizing plate and the crystal layer, and the incident light passes through the linear polarizing plate and the quarter-wave retarder to become a circularly polarized light or a Elliptically polarizing light, increasing the visibility of the emitted light and reducing the intensity of the reflected light, or passing the emitted light of the display module through the linear polarizing plate and the quarter-wave retarder, and the incident light passes through the linear polarizing plate And the crystal layer becomes a circularly polarized light or an elliptically polarized light, which increases the visibility of the emitted light and reduces the intensity of the reflected light.

1A‧‧‧External LCD touch display device

1B‧‧‧External LCD touch display device

1C‧‧‧In-line LCD touch display device

1D‧‧‧Inline embedded hybrid LCD touch display device

10‧‧‧LCD module

101‧‧‧Color filter glass

102‧‧‧Color filters

103‧‧‧Liquid layer

104‧‧‧Thin-film transistor circuit

105‧‧‧ glass substrate

106‧‧‧Line polarizer

107‧‧‧Backlight

12‧‧‧ Protective cover

120‧‧‧ polarizing layer

1200‧‧‧Line polarizer

1202‧‧‧ Quarter-wave retarder

122‧‧‧ crystal layer

14‧‧‧Touch Module

140‧‧‧Y transparent conductive film

142‧‧‧Insulation

144‧‧‧X transparent conductive film

2‧‧‧In-line back-emitting organic light-emitting diode display device

20‧‧‧Backlight Organic Light Emitting Diode Display Module

200‧‧‧thin film transistor circuit

202‧‧‧Back OLED layer

204‧‧‧reflective layer

206‧‧‧Substrate

22‧‧‧Protection cover

220‧‧‧ polarizing layer

2200‧‧‧Line polarizer

2202‧‧‧ Quarter-wave retarder

222‧‧‧ crystal layer

24‧‧‧Touch Module

240‧‧‧Y transparent conductive film

242‧‧‧Insulation

244‧‧‧X transparent conductive film

3‧‧‧In-line top-emitting organic light-emitting diode display device

30‧‧‧Top-emitting organic light-emitting diode display module

300‧‧‧Thin-film transistor circuit

302‧‧‧Back OLED layer

304‧‧‧reflective layer

306‧‧‧Substrate

32‧‧‧Protection cover

320‧‧‧ polarizing layer

3200‧‧‧Line polarizer

3202‧‧‧ Quarter-wave retarder

322‧‧‧ crystal layer

34‧‧‧Touch Module

340‧‧‧Y transparent conductive film

342‧‧‧Insulation

344‧‧‧X transparent conductive film

L1‧‧‧Out of light

L2‧‧‧ incident light

L3‧‧‧ reflected light

The first figure is a schematic structural view of a liquid crystal touch display device according to a first preferred embodiment of the present invention; the second figure is a schematic structural view of a liquid crystal touch display device according to a second preferred embodiment of the present invention: FIG. 4 is a schematic structural view of a liquid crystal touch display device according to a fourth preferred embodiment of the present invention; 5 is a schematic structural view of a back-illuminated organic light-emitting diode display device according to a fifth preferred embodiment of the present invention; and FIG. 6 is a schematic structural view of a top-emitting organic light-emitting diode display device according to a sixth preferred embodiment of the present invention. .

In order to provide a better understanding and understanding of the structural features and the efficacies achieved by the reviewers, please refer to the preferred examples and detailed descriptions to illustrate the following: due to the reduced touch display devices The external light reflection interference may be provided inside or outside the touch display device with a plurality of layers of polarizing plates, wavelength retarders or a combination thereof to reduce the reflection of the incident light and thereby enhance the contrast between the outgoing light and the external light, and solve the problem for the user. When viewing the display device through a lens having a linear polarizing plate, the angle between the polarization direction of the emitted light and the polarizing direction of the polarizing plate of the lens is limited, which causes a problem of reduced visibility, and must also pass through the linear polarizing plate, the wavelength retarder or The combination is arranged such that the emitted light is combined in the form of circularly polarized light or elliptically polarized light after being combined by the stacking of the polarizing elements, thereby improving the visibility. However, although the prior art can solve the above problem, the polarizing element is increased. However, it also causes problems such as the overall thickness and cost increase. Moreover, the polarizing elements are mostly made of polymer materials, and the wear-resistant and scratch-resistant properties are not Preferably, it is necessary to additionally apply a hardened resin layer to the external surface, which also increases the cost of production. Therefore, in view of the above-mentioned shortcomings, the present invention proposes the following devices to improve the conventional problems.

The first embodiment of the present invention is a schematic diagram of a liquid crystal touch display device according to a first preferred embodiment of the present invention. As shown in the figure, the present embodiment is an external liquid crystal touch display device 1A, which includes: A liquid crystal display module 10, a protective cover 12, and a touch module 14, the liquid crystal display module 10 includes a color filter glass 101, a color filter 102, a liquid crystal layer 103, and a thin film transistor. a circuit 104, a glass substrate 105, a linear polarizing plate 106, and a backlight 107, The cover 12 includes a polarizing layer 120 and a crystal layer 122, and covers the liquid crystal display module 10. The polarizing layer 120 includes a linear polarizing plate 1200 and a quarter-wave retarder 1202. The touch module 14 includes a Y-transparent conductive film (ITO) 140, an insulating layer 142, and an X-pole transparent conductive film 144. The linear polarizing plate 1200 is disposed on one side of the crystal layer 122, and the quarter-wave retarder 1202 The Y-polar transparent conductive film 140 is disposed on one side of the polarizing layer 120, and the insulating layer 142 is disposed on one side of the Y-polar transparent conductive film 140. The X-pole is transparent and conductive. The film 144 is disposed on one side of the insulating layer 142. The color filter glass 101 is disposed on one side of the X-pole transparent conductive film 144. The color filter 102 is disposed on the color filter glass 101. On one side, the liquid crystal layer 103 is disposed on one side of the color filter 102. The thin film transistor circuit 104 is disposed on one side of the liquid crystal layer 103. The glass substrate 105 is disposed on one of the thin film transistor circuits 104. On the side, the linear polarizing plate 106 is disposed on one side of the glass substrate 105, and the backlight 107 is disposed on one of the linear polarizing plates 106. side.

The crystal layer 122 is used as a protective cover instead of the glass material of the conventional touch display device, and has the effect of a quarter-wave retarder, which not only improves the hardness and wear resistance and scratch resistance, but also enables An outgoing light L1 is sequentially passed through the linear polarizing plate 1200 of the polarizing layer 120 and the crystal layer 122, and then converted into a circularly polarized light or an elliptically polarized light, and an incident light L2 is sequentially passed through the linear polarizing plate. After the 1200 and the quarter-wave retarder 1202 are converted into a circularly polarized light or an elliptically polarized light, after the reflected light L3 is generated on the interface, the quarter-wave retarder 1202 becomes the polarized direction and the line. The polarizing plate 1200 is polarized in a direction perpendicular to the vertical direction, and cannot pass through the linear polarizing plate 1200, thereby reducing the intensity of the reflection. In this embodiment, the quarter-wave retarder 1202 may not be disposed, and the liquid crystal touch display may be omitted. The device 1A only has a function of converting the emitted light L1 into a circularly polarized light or an elliptically polarized light without having a function of reducing reflection.

Please refer to the second figure, which is a schematic structural view of a liquid crystal touch display device according to a second preferred embodiment of the present invention; as shown in the figure, the present embodiment is an external liquid crystal touch display device 1B, which includes a liquid crystal display module 10, a protective cover 12, and a touch module 14, the liquid crystal display module 10 includes a color filter glass 101, a color filter 102, a liquid crystal layer 103, and a thin film battery. The crystal circuit 104, a glass substrate 105, a linear polarizing film 106, and a backlight 107, the protective cover 12 includes a polarizing layer 120 and a crystal layer 122, and covers the liquid crystal display module 10. The polarizing layer 120 includes a linear polarizing plate 1200 and a quarter-wave retarder 1202. The touch module 14 includes a Y-transparent conductive film (ITO) 140, an insulating layer 142, and an X-pole transparent conductive film 144. The linear polarizing film 1200 is disposed on one side of the crystal layer 122, and the quarter-wave retarder 1202 is disposed on one side of the linear polarizing plate 1200. After a gap is separated, the Y-polar transparent conductive film 140 is disposed in the quarter. One side of the wavelength retardation plate 1202, the insulating layer 142 is disposed on one side of the Y-pole transparent conductive film 140, and the X-pole transparent conductive film 144 is disposed on one side of the insulating layer 142. The color filter glass 101 is disposed on one side of the Y-transparent conductive film 142. One side of the X-pole transparent conductive film 144, the color filter 102 is disposed on the color filter glass 101 On one side, the liquid crystal layer 103 is disposed on one side of the color filter 102. The thin film transistor circuit 104 is disposed on one side of the liquid crystal layer 103. The glass substrate 105 is disposed on one of the thin film transistor circuits 104. On the side, the linear polarizing plate 106 is disposed on one side of the glass substrate 105, and the backlight 107 is disposed on one side of the linear polarizing plate 106.

The difference between the embodiment and the first embodiment is that the touch module 14 is disposed under the protective cover 12 and contacts the polarizing layer 120 to move over the liquid crystal display module 10 and contacts the color filter glass 101. And the external layer is changed from the external type to the external type. As in the first embodiment, the crystal layer 122 is a glass cover plate of a conventional touch display device, and has the effect of a quarter-wave retarder. The effect of increasing hardness, abrasion and scratch resistance, converting the emitted light L1 into a circularly polarized light or an elliptically polarized light, reducing reflection anti-glare, etc., and also removing the quarter-wave retarder 1202 can be achieved. Therefore, the liquid crystal touch display device 1B has only a function of converting the emitted light L1 into a circularly polarized light or an elliptically polarized light without having a function of reducing reflection.

Please refer to the third embodiment, which is a schematic structural view of a liquid crystal touch display device according to a third preferred embodiment of the present invention. As shown in the figure, the present embodiment is an in-cell liquid crystal touch display device 1C, which includes: a liquid crystal display module 10, a protective cover 12, and a touch module 14, the liquid crystal display module 10 includes a color filter glass 101, a color filter 102, a liquid crystal layer 103, and a thin film transistor circuit. 104. A glass substrate 105, a linear polarizing film 106, and a backlight 107. The protective cover 12 includes a polarizing layer 120 and a crystal layer 122, and covers the liquid crystal display module 10. The polarizing layer 120 includes a linear polarization. The 1200 and the quarter-wave retarder 1202, the touch module 14 includes a Y-transparent conductive film (ITO) 140, an insulating layer 142, and an X-pole transparent conductive film 144. On one side of the crystal layer 122, the quarter-wave retarder 1202 is disposed on one side of the linear polarizing plate 1200. After a gap is formed, the color filter glass 101 is disposed on the quarter-wave retarder. One side of the 1202, the color filter 102 is disposed on the color filter glass 10 The liquid crystal layer 103 is disposed on one side of the color filter 102. The thin film transistor circuit 104 and the Y-pole transparent conductive film 140 included in the touch module 14 are disposed on the liquid crystal layer 103. On one side, the insulating layer 142 is disposed on one side of the Y-transparent conductive film 140, and the X-pole transparent conductive film 144 is disposed on one side of the insulating layer 142. The glass substrate 105 is disposed on the thin film transistor circuit 104. The touch module 14 includes one side of the X-pole transparent conductive film 144. The linear polarizer 106 is disposed on one side of the glass substrate 105. The backlight 107 is disposed on one side of the linear polarizer 106.

The main difference between the first embodiment and the second embodiment is that the touch module 14 is disposed at the same location as the thin film transistor 104. On the substrate 105, which is referred to as an in-cell touch, as in the first embodiment and the second embodiment, the crystal layer 122 replaces the glass material of the conventional touch display device to form a protective cover. It has the effect of one-quarter wavelength retarder, and can achieve the effect of hardness improvement, abrasion resistance and scratch resistance, converting the emitted light L1 into a circularly polarized light or an elliptically polarized light, reducing reflection and anti-glare, and the same The quarter-wave retarder 1202 can be removed, so that the liquid crystal touch display device 1C has only the function of converting the emitted light L1 into a circularly polarized light or an elliptically polarized light without reducing the reflection. Features.

Please refer to the fourth embodiment, which is a schematic structural view of a liquid crystal touch display device according to a fourth preferred embodiment of the present invention. As shown in the figure, the present embodiment is an in-line hybrid liquid crystal touch display device 1D. The liquid crystal display module 10 includes a color filter glass 101, a color filter 102, a liquid crystal layer 103, and a film. The liquid crystal display module 10 includes a color filter glass 101, a color filter 102, a liquid crystal layer 103, and a film. The crystal circuit 104, a glass substrate 105, a linear polarizing film 106, and a backlight 107, the protective cover 12 includes a polarizing layer 120 and a crystal layer 122, and covers the liquid crystal display module 10. The polarizing layer 120 The first electrode is a Y-transparent conductive film (ITO) 140, and includes a first electrode and a second electrode. The first electrode is a Y-transparent conductive film (ITO) 140. The second electrode is an X-pole transparent conductive film 144. The linear polarizing plate 1200 is disposed on one side of the crystal layer 122. The quarter-wave retarder 1202 is disposed on one side of the linear polarizing plate 1200. After a gap, the color filter glass 101 is set at the quarter-wavelength delay One side of the sheet 1202, the color filter 102 and the Y-pole transparent conductive film 140 are disposed on one side of the color filter glass 101, and the Y-pole transparent conductive film 140 is framed in each pixel. The periphery of the color filter 102 forms a black matrix. The liquid crystal layer 103 is disposed on one side of the color filter 102 and the Y-pole transparent conductive film 140. The thin film transistor circuit The X-pole transparent conductive film 144 is disposed on one side of the liquid crystal layer 103, and the X-pole transparent conductive film 144 is disposed on one side of the thin film transistor circuit 104. The glass substrate 105 is disposed on one side of the X-pole transparent conductive film 144. The sheet 106 is disposed on one side of the glass substrate 105, and the backlight 107 is disposed on one side of the linear polarizing plate 106.

The main difference between the present embodiment and the foregoing first to third embodiments is that the liquid crystal layer 103 of the liquid crystal display module 10 and the thin film transistor circuit 104 form the pixel black side in the embodiment. The black matrix replaces the insulating layer in the touch module 14. Therefore, the insulating layer in the first to third embodiments is not separately provided. The display is disposed in a display module and displayed. The structure of the touch module of the module and the gap between the first electrode and the second electrode is referred to as “embedded and externally mixed”. As in the first to third embodiments, the crystal layer 122 is The glass cover of one of the conventional touch display devices can be used as a protective cover plate and has the effect of a quarter-wave retarder, and can achieve wear-resistant and scratch-resistant, and converts the emitted light L1 into a circularly polarized light or an elliptically polarized light, reduced reflection anti-glare, etc., and the quarter-wave retarder 1202 can also be removed, so that the liquid crystal touch display device 1 only has the reflected light L1 converted into A function of circularly polarized light or an elliptically polarized light without the function of reducing reflection.

In the above-mentioned first to fourth embodiments, the liquid crystal display module 10 can be replaced by an organic light emitting diode display module. Since the organic light emitting diode display module does not need to be equipped with the backlight 107 and the linear polarizing film 106, The number of structural layers is also smaller than that of the liquid crystal display module 10, so that the overall touch display device is lighter and thinner, and the optical path is shorter, thereby reducing the light loss during the propagation process.

Please refer to FIG. 5 , which is a schematic structural diagram of a back-illuminated organic light-emitting diode display device according to a fifth preferred embodiment of the present invention; as shown in the figure, the embodiment is an in-line back-emitting organic light-emitting diode. The touch display device 2 includes a back-emitting organic light-emitting diode (OLED) display module 20, a protective cover 22, and a touch module 24. The back-lighted OLED display module 20 includes a thin film battery. The crystal circuit 200, an OLED layer 202, a reflective layer 204, and a substrate 206, the polarizing layer 220 includes a linear polarizing plate 2200 and a quarter-wave retarder 2202. The touch module 24 includes a Y-transparent conductive a film (ITO) 240, an insulating layer 242, and an X-pole transparent conductive film 244. The linear polarizing plate 2200 is disposed on one side of the quarter-wave retarder 2202, and the crystal layer 222 is disposed on the linear polarizing film 2200. On one side, the thin film transistor circuit 200 and the Y-pole transparent conductive film 240 included in the touch module 24 are disposed on one side of the crystal layer 222, and the insulating layer 242 is disposed on the Y-pole transparent conductive film 240. It On one side, the X-pole transparent conductive film 244 is disposed on one side of the insulating layer 242. The OLED layer 202 is disposed on the thin film transistor circuit 200 and the X-pole transparent conductive film 244 included in the touch module 24. On the side, the reflective layer 204 is disposed on one side of the OLED layer 202, and the substrate 206 is disposed on one side of the reflective layer 204.

Similar to the embodiment of the liquid crystal touch display device, the crystal layer 222 is used as a protective cover plate instead of one of the conventional touch display devices, and can also serve as the thin film transistor of the back light emitting OLED display module 20. The growth substrate of the circuit 200, the OLED layer 202, and the reflective layer 204 and the like also has the effect of a quarter-wave retarder, so that an outgoing light L1 sequentially passes through the linear polarizer 2200 and the quarter. After one of the wavelength retardation plates 2202, the light is converted into a circularly polarized light or an elliptically polarized light, and an incident light L2 is sequentially passed through the linear polarizing plate 2200 and the crystal layer 222 to be converted into a circularly polarized light or an ellipse. After the polarized light is generated, a reflected light L3 is generated on the interface, and the crystal layer 222 is polarized by a line whose polarization direction is perpendicular to the linear polarizing plate 2200, and the linear polarizing plate 2200 cannot pass through the linear polarizing plate 2200, thereby reducing the intensity of the reflection. In this embodiment, the quarter-wave retarder 2202 may not be disposed, and the in-cell back-emitting organic light-emitting diode touch display device 2 has only the function of reducing reflection, and does not have the exit. The L1 is converted into a circularly polarized light or an elliptically polarized light. The substrate 206 is used as a package substrate of the back light emitting OLED display module 20 to protect the reflective layer 204, the OLED layer 202, and the thin film transistor circuit. 200 film elements.

The polarizing layer 220 is disposed on the outer side of the crystal layer 222, and the crystal layer 222 cannot be used for abrasion and scratch resistance. The anti-scratch treatment is performed on the outside of the polarizing layer 220, such as adding a hardened resin layer. Further, the back surface of the thin film transistor circuit 200 may further include a back substrate, which further enhances the strength of the overall structure and the touch. The protection effect of the control module 24.

Please refer to the sixth figure, which is a top-emitting organic light-emitting diode of the sixth preferred embodiment of the present invention. A schematic diagram of a structure of a body display device; as shown in the figure, the present embodiment is an in-cell top-emitting organic light-emitting diode display device 3 comprising: a top-emitting organic light-emitting diode (OLED) display module 30. A protective cover 32 and a touch module 34. The top-emitting OLED display module 30 includes a thin film transistor circuit 300, an OLED layer 302, a reflective layer 304, and a substrate 306. The polarizing layer 220 includes a linear polarizing plate 3200 and a quarter-wave retarder 3202. The touch module 34 includes a Y-transparent conductive film (ITO) 340, an insulating layer 342, and an X-pole transparent conductive film 344. 3200 is disposed on one side of the crystal layer 322. The quarter-wave retarder 3202 is disposed on one side of the linear polarizer 3200. The OLED layer 302 is disposed on one side of the quarter-wave retarder 3202. The reflective layer 304 is disposed on one side of the OLED layer 302. The thin film transistor 300 and the Y-pole transparent conductive film 340 included in the touch module 34 are disposed on one side of the reflective layer 304. 342 is disposed on one side of the Y-pole transparent conductive film 340, and the X-pole transparent conductive film 344 is disposed on the The side layer 342, 306 disposed on the substrate side of the conductive transparent electrode film 344 of the thin film transistor circuit 300 comprises a module 34 and the touch of the X.

In this embodiment, the component of the protective cover 32 is disposed in the same manner as the first to fourth embodiments. The crystal layer 322 can also be used as a protective cover instead of the glass cover of the conventional touch display device. It also serves as a package cover plate of the top-emitting OLED display module 30, and has the effect of having a quarter-wave retarder, and can achieve wear resistance, scratch resistance, and hardness improvement to protect the OLED layer 302 and The incident light L1 is converted into a circularly polarized light or an elliptically polarized light and the effect of reducing the anti-glare is reduced, and the quarter-wave retarder 3202 can also be removed, and the in-line top-emitting organic light-emitting diode is touched. The control display device 3 has only a function of converting the outgoing light L1 into a circularly polarized light or an elliptically polarized light without having a function of reducing reflection.

In summary, the bi-refracting structure touch display device of the present invention replaces the glass with a birefringent crystal to form a protective cover, and is applied to the production of the touch display device through the birefringent crystal. The optical properties of the body emit a circularly polarized light or elliptically polarized light, and reduce the reflection of incident light, increase the visibility of the display device or the touch display device, and reduce the number of layers disposed, and reduce the touch. The thickness of the display device is controlled, the cost is reduced, and the visibility of the display device or the touch display device is increased, and the material properties of the birefringent crystal are scratch-resistant.

Therefore, this creation is a novelty, progressive and available for industrial use. It should be in accordance with the patent application requirements stipulated in China's Patent Law. It is undoubtedly proposed to create a patent application according to law, and the Prayer Council will grant patents as soon as possible. prayer.

However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the shape, structure, characteristics and spirit described in the scope of the patent application are equally changed. Modifications shall be included in the scope of the patent application of this creation.

1A‧‧‧External LCD touch display device

10‧‧‧LCD module

101‧‧‧Color filter glass

102‧‧‧Color filters

103‧‧‧Liquid layer

104‧‧‧Thin-film transistor circuit

105‧‧‧ glass substrate

106‧‧‧Line polarizer

107‧‧‧Backlight

12‧‧‧ Protective cover

120‧‧‧ polarizing layer

1200‧‧‧Line polarizer

1202‧‧‧ Quarter-wave retarder

122‧‧‧ crystal layer

14‧‧‧Touch Module

140‧‧‧Y transparent conductive film

142‧‧‧Insulation

144‧‧‧X transparent conductive film

L1‧‧‧Out of light

L2‧‧‧ incident light

L3‧‧‧ reflected light

Claims (6)

A touch display device with a birefringent structure includes: a display module; a protective cover plate comprising a polarizing layer and a crystal layer, and covering the display module, the display module generating one of the emitted light After the protective cover, a circularly polarized light or an elliptically polarized light is formed; and a touch module is disposed on the protective cover. A touch display device with a birefringent structure includes: a display module; a protective cover plate comprising a polarizing layer and a crystal layer, and covering the display module, the display module generating one of the emitted light After the protective cover, a circularly polarized light or an elliptically polarized light is formed; and a touch module is disposed on the display module. The touch display device with a birefringent structure as described in claim 1 or 2, wherein the display module is an organic light emitting diode display module or a liquid crystal display module. The touch display device with a birefringent structure according to claim 1 or 2, wherein the polarizing layer is a circular polarizing plate, and the circular polarizing plate comprises a linear polarizing plate and a quarter wavelength. A retardation film is disposed between the quarter-wave retarder and the crystal layer. The touch display device with a birefringent structure according to claim 1 or 2, wherein the crystal layer is a sapphire glass layer or a quartz glass layer. The touch display device with a birefringent structure according to claim 5, wherein the crystal direction of the sapphire glass layer is C axis, M axis, A axis or R axis.