TW201643521A - Display device - Google Patents

Abstract

A display device is provided. The display device includes a display panel and a coated phase difference layer disposed on the display panel. The coated phase difference layer includes a liquid crystal material layer and a light-sensitive material mixed in the liquid crystal material layer. The coated phase difference layer has a first phase difference region and a second phase difference region, and the phase differences of the two regions are different from each other.

Description

Display device

The present disclosure relates to a display device, and more particularly to a thin display device having a good optical display effect.

Generally, a conventional polarizing plate is made of a stretchable polyvinyl alcohol (PVA) material, and after being adsorbed with an iodide ion, it is stretched through an optical film to have a linearly polarized light absorption axis property, and has a linearly polarized light. effect. However, the stretching effect of such a polarizing plate is completely uniform, and thus the overall optical effect of the display panel is not good.

The disclosure relates to a display device. In the embodiment, the photosensitive material is mixed in the liquid crystal material layer to form a coating type retardation layer, and different regions of the coating type retardation layer have different phase differences, and the coating of the coating type retardation layer is applied. The display surface can have uniform brightness in the omnidirectional side view angle and achieve uniform optical performance in each area.

According to an embodiment of the present disclosure, a display device is proposed. The display device includes a display panel and a coating type retardation layer, and the coating phase The difference layer is disposed on the display panel. The coating type retardation layer includes a liquid crystal material layer and a photosensitive material, and the photosensitive material is mixed in the liquid crystal material layer. The coating type retardation layer has a first phase difference region and a second phase difference region, and the first phase difference region and the second phase difference region have different phase differences.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

10, 20, 30, 40, 50, 80, 90‧‧‧ display devices

100‧‧‧ display panel

200, 200A, 200B‧‧‧ coated polarizer

210‧‧‧First area

210a‧‧‧first alignment angle

220‧‧‧Second area

220a‧‧‧second alignment angle

230‧‧‧ Third Area

230a‧‧‧ Third alignment angle

240‧‧‧Liquid crystal materials

300‧‧ ‧ adhesive layer

400‧‧‧Base

500‧‧‧ phase difference layer

600‧‧‧Coated phase difference layer

610‧‧‧First phase difference zone

610a, 620a‧‧‧ alignment angle

620‧‧‧Second phase difference zone

700‧‧‧ polarizing layer

L‧‧‧UV light

M‧‧‧Photo Mask

1 is a cross-sectional view of a display device in accordance with an embodiment of the present disclosure.

FIG. 2A is a schematic view showing a coating type polarizing layer according to an embodiment of the present disclosure.

FIG. 2B is a schematic view showing a coating type polarizing layer according to another embodiment of the present disclosure.

FIG. 2C is a diagram showing a chromaticity coordinate diagram according to an embodiment of the present disclosure.

FIG. 2D is a schematic view showing a photomask for fabricating a coating type polarizing layer according to an embodiment of the present disclosure.

FIG. 3 is a cross-sectional view showing a display device according to another embodiment of the present disclosure.

FIG. 4A is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

FIG. 4B is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

FIG. 5 is a cross-sectional view of a display device according to still another embodiment of the present disclosure.

FIG. 6 is a schematic view showing a coating type retardation layer according to an embodiment of the present disclosure.

7A-7B are diagrams showing a reflected viewing angle luminance according to an embodiment of the present disclosure.

FIG. 8 is a cross-sectional view showing a display device according to a further embodiment of the present disclosure.

FIG. 9 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

In an embodiment of the present disclosure, a photosensitive material is mixed in a liquid crystal material layer to form a coating type retardation layer, and different regions of the coating type retardation layer have different phase differences, and the coating phase of the regional coating is applied. The setting of the difference layer can make the display surface have uniform brightness in the omnidirectional side view angle, and achieve the effect of uniform optical performance of each area. The composition of the embodiments is for illustrative purposes and is not intended to limit the scope of the disclosure. Those having ordinary knowledge may modify or change the components as needed in accordance with the actual implementation.

1 is a cross-sectional view of a display device 10 in accordance with an embodiment of the present disclosure. As shown in FIG. 1 , the display device 10 includes a display panel 100 and a coating-type polarizing layer 200 , and the coating-type polarizing layer 200 is disposed on the display panel 100 .

In an embodiment, the display panel 100 has a first pixel area, a first The two pixel regions and a third pixel region include, for example, a red pixel, a green pixel, and a blue pixel, respectively. In an embodiment, the coating type polarizing layer 200 comprises a liquid crystal material layer, a dye material and a photosensitive material, and the dye material and the photosensitive material are mixed in the liquid crystal material layer, that is, the coating type polarizing layer of the embodiment 200 is, for example, a light-aligned liquid crystal coating layer, and different dye materials can absorb light having different wavelength ranges, and thus can have a polarizing effect. In one embodiment, the thickness of the coating type polarizing layer 200 of the liquid crystal coating layer is, for example, 1 to 50 μm. In another embodiment, the thickness of the coating-type polarizing layer 200 of the liquid crystal coating layer is, for example, 1 to 5 μm, so that the coating-type polarizing layer 200 of the display device can be made thinner.

In the embodiment shown in FIG. 1, the coating-type polarizing layer 200 is directly applied to the display panel 100, for example.

Therefore, compared with the conventional polyvinyl alcohol (PVA) stretching and polarizing plate for adsorbing iodide ions, since the polyvinyl alcohol film is combined with two protective layers, the three-layer polarizing plate has a thickness of at least 10 to 40 μm, according to the present invention. According to the embodiment of the disclosure, the thickness of the coating-type polarizing layer 200 of the liquid crystal coating layer can be as small as 1 to 5 μm, so that the thickness of the display device can be reduced and the effect of weight reduction can be achieved.

In the embodiment, taking the display panel 100 as a liquid crystal display panel as an example, the thickness of the display device 10 is less than 300 micrometers.

In an embodiment, the coating type polarizing layer 200 has a first area, a second area, and a third area, the first area corresponds to the first pixel area, the second area corresponds to the second pixel area, and the third area The area corresponds to the third pixel area. The first region has a maximum light transmittance with respect to light having a first wavelength range, the second region has a maximum light transmittance with respect to light having a second wavelength range, and the third region has a third wavelength relative to The range of light has the highest light transmittance. First wavelength range, second At least two of the wavelength range and the third wavelength range are different.

In other words, the patterns of the first region, the second region, and the third region correspond to the patterns of the first pixel region, the second pixel region, and the third pixel region. The following is an example in which the pixel region is a long strip pattern as an example, but the patterns of the three pixel regions and their corresponding first, second, and third regions may be selected according to actual conditions, Limited to the long strip pattern. In an embodiment, the first pixel region, the second pixel region, and/or the third pixel region are periodically arranged.

As shown in FIG. 1 , the display device 10 may include at least one coating-type polarizing layer 200 disposed on a surface of the display panel 100 .

In an embodiment, the display device may further include two coating-type polarizing layers (not shown), and the two coating-type polarizing layers are respectively disposed on two opposite surfaces of the display panel.

FIG. 2A is a schematic view showing a coating type polarizing layer according to an embodiment of the present disclosure. As shown in FIG. 2A, in one embodiment, the liquid crystal material layer of the coating type polarizing layer 200A includes a plurality of liquid crystal molecules, and the liquid crystal molecules in the first region 210 have a first alignment angle 210a, and the second region 220 The liquid crystal molecules have a second alignment angle 220a, and the liquid crystal molecules in the third region 230 have a third alignment angle 230a, and at least two of the first alignment angle 210a, the second alignment angle 220a, and the third alignment angle 230a are different. . In an embodiment, any two areas of the first area 210, the second area 220, and the third area 230 may be the same or different. In an embodiment, any two shapes of the first region 210, the second region 220, and the third region 230 may be the same or different. For example, in the embodiment as shown in FIG. 2A, the first alignment angle 210a and the second alignment angle 220a are large. The same is true, and the third alignment angle 230a is different from the other two. In other embodiments, the first alignment angle 210a, the second alignment angle 220a, and the third alignment angle 230a may also be different.

In one embodiment, at least two of the first alignment angle 210a, the second alignment angle 220a, and the third alignment angle 230a differ by, for example, ±10 degrees.

In detail, at least one of the two polarizing layers of the liquid crystal display device adopts the coating-type polarizing layer 200 of the embodiment of the present disclosure, and the angular difference between the two absorption axes can be regionally adjusted. For example, in some areas, the angle difference between the absorption axes of the two polarizing layers is 90 degrees, and in some areas, the angle difference of the absorption axis is adjusted to 90±10 degrees, and the display effect can be optimized regionally. The effect of, for example, the maximum light transmittance can be achieved.

FIG. 2B is a schematic view showing a coating type polarizing layer according to another embodiment of the present disclosure. As shown in FIG. 2B, in an embodiment, the dye material in the coating type polarizing layer 200B may include a first dye, a second dye, and a third dye, and the first dye is located in the first region 210, The second dye is located in the second region 220 and the third dye is located in the third region 230. At least two of the first dye, the second dye, and the third dye are different. In an embodiment, the two types of the first dye, the second dye, and the third dye are the same, and the third type is different from the other two types. In other embodiments, the types of the first dye, the second dye, and the third dye are, for example, different from each other. In an embodiment, the first dye, the second dye, and the third dye may be dichroic dyes, and/or azo dyes, or other suitable materials.

In one embodiment, the concentration of at least two of the first dye, the second dye, and the third dye may vary, for example. In the embodiment, the first dye, the second dye The concentration of both the material and the third dye is the same, while the concentration of the third is different from the concentration of the other two. In other embodiments, the concentrations of the first dye, the second dye, and the third dye are, for example, different from each other. In some embodiments, the type and concentration of the first dye, the second dye, and the third dye may be appropriately adjusted to achieve a maximum light transmittance of the first region 210 relative to light having a first wavelength range, and a second Region 220 has a maximum light transmittance relative to light having a second wavelength range, and third region 230 has a maximum light transmittance relative to light having a third wavelength range.

In detail, at least one of the two polarizing layers of the liquid crystal display device adopts the coating type polarizing layer 200 of the embodiment of the present disclosure, and the spectral range of the matching can be adjusted by using the type and/or concentration of the dye. The respective pixel regions and their corresponding regions have the same wavelength range of maximum light transmittance, and the display effect can be optimized regionally and the overall maximum light transmittance can be achieved.

In the embodiment as shown in FIG. 2B, the first alignment angle 210a, the second alignment angle 220a, and the third alignment angle 230a may be the same or both. For example, in this embodiment, the first alignment angle 210a, the second alignment angle 220a, and the third alignment angle 230a are substantially the same. In an embodiment, the first alignment angle 210a, the second alignment angle 220a, and the third alignment angle 230a may all be different. In the embodiment as shown in FIGS. 2A-2B, at least two of the first pixel region, the second pixel region, and the third pixel region are periodically arranged.

According to an embodiment of the present disclosure, by adjusting the alignment angle, dye type, and/or concentration of liquid crystal molecules in the first region 210, the second region 220, and the third region 230 of the coating-type polarizing layer 200, it is possible to further adjust each through The range of chromaticity coordinates of the light of the area. In the embodiment, the first area, the second area, and the first The three regions have maximum light transmittance with respect to light having a first wavelength range, light having a second wavelength range, and light having a third wavelength range, respectively, and the first wavelength range, the second wavelength range, and the third wavelength range Corresponding to a first chromaticity coordinate (x1, y1), a second chromaticity coordinate (x2, y2) and a third chromaticity coordinate (x3, y3), respectively. At least two of the first chromaticity coordinates (x1, y1), the second chromaticity coordinates (x2, y2), and the third chromaticity coordinates (x3, y3) are different. That is to say, the chromaticity coordinates of each region can be adjusted so that at least the two are different from each other, and can be adjusted to be different. In an embodiment, any two areas of the first area 210, the second area 220, and the third area 230 may be the same or different. In an embodiment, any two shapes of the first region 210, the second region 220, and the third region 230 may be the same or different.

FIG. 2C is a diagram showing a chromaticity coordinate diagram according to an embodiment of the present disclosure. In one embodiment, as shown in FIG. 2C, by adjusting the alignment angle, dye type, and/or concentration of liquid crystal molecules in the first region 210, the second region 220, and the third region 230 of the coating-type polarizing layer 200, The chromaticity coordinate values of the respective regions are red-shifted or blue-shifted. For example, the difference (Δx, Δy) between the first chromaticity coordinate (x1, y1), the second chromaticity coordinate (x2, y2), and the third chromaticity coordinate (x3, y3) It can be, for example, (±0.1, ±0.1). Since the differences can be adjusted regionally, the display device can be optimized for overall chromaticity.

FIG. 2D is a schematic view showing a photomask for fabricating a coating type polarizing layer according to an embodiment of the present disclosure. As shown in FIG. 2D, after the liquid crystal material 240 is applied, the ultraviolet light L and the high molecular polymer alignment agent having a photosensitive group, such as polyimide (PI), are used together with the use of the mask M. In the photoalignment mode, the regional alignment can be achieved, and the first region, the second region, and the third region corresponding to the pixel (pixel region) corresponding to the display panel are formed. The area, and the adjustment of the alignment angle for each area. In an embodiment, any two areas of the first area, the second area, and the third area may be the same or different. In an embodiment, any two shapes among the first region, the second region, and the third region may be the same or different.

As described above, the coating-type polarizing layer 200 produced by coating a liquid crystal material layer in which a dye material and a photosensitive material are mixed has an effect of reducing the thickness and reducing the weight of the entire device; Different dyes have different absorption spectrum characteristics, and can adjust the type and/or concentration of the dye in accordance with the absorption spectrum requirements of various display devices, and can achieve the goal of displaying the overall optimized chromaticity of the display device.

FIG. 3 is a cross-sectional view showing a display device according to another embodiment of the present disclosure. The same or similar components as those of the above-mentioned embodiments are denoted by the same or similar components, and the related descriptions of the same or similar components are referred to the foregoing, and are not described herein again.

As shown in FIG. 3, the display device 20 further includes a substrate 400 on which the coating-type polarizing layer 200 is applied. In an embodiment, the substrate 400 may include, for example, a cellulose triacetate layer (TAC), a polymethyl methacrylate layer (PMMA), a cyclic olefin polymer layer (COP), and a polyethylene terephthalate ( At least one of PET), a plastic substrate and a soft glass.

Furthermore, as shown in FIG. 3 , the display device 20 further includes a glue layer 300 , and the coating type polarizing layer 200 is attached to the display panel 100 via the adhesive layer 300 . The glue layer 300 is, for example, a pressure sensitive adhesive (PSA). Furthermore, the display device 20 can include two substrates 400, two adhesive layers 300 and two coating-type polarizing layers 200. The two sets of substrates 400, the coating-type polarizing layer 200 and the adhesive layer 300 are respectively disposed on the display panel 100. Two phases On the surface.

4A is a schematic cross-sectional view of a display device according to still another embodiment of the present disclosure, and FIG. 4B is a cross-sectional view showing a display device according to still another embodiment of the present disclosure. The same or similar components as those of the above-mentioned embodiments are denoted by the same or similar components, and the related descriptions of the same or similar components are referred to the foregoing, and are not described herein again.

As shown in FIG. 4A, in the display device 30, the display panel 100 is, for example, an organic light emitting diode display panel, and the display device 30 further includes a phase difference layer 500. The phase difference layer 500 is disposed on the display panel 100 and the polarizing layer 200. between. In an embodiment, the thickness of display device 30 is, for example, less than 100 microns. In the present embodiment, the phase difference layer 500 is, for example, a circularly polarizing layer of 1/4λ or 3/4λ. In an embodiment, the phase difference layer 500 can also serve as a coating substrate for the coating type polarizing layer 200. In one embodiment, the phase difference layer 500 can be attached to the display panel 100 by the adhesive layer 300.

As shown in FIG. 4B , in the display device 40 , the display panel 100 is, for example, an organic light emitting diode display panel. The display device 40 further includes a phase difference layer 500 bonded to the display panel 100 by the adhesive layer 300 . Thereafter, the coating type polarizing layer 200 is formed on a substrate 400 and then adhered to the phase difference layer 500 by another adhesive layer 300. In an embodiment, the thickness of display device 40 is, for example, less than 100 microns. In the present embodiment, the phase difference layer 500 is, for example, a circularly polarizing layer of 1/4λ or 3/4λ.

FIG. 5 is a cross-sectional view of a display device according to still another embodiment of the present disclosure. The same or similar components as those of the above-mentioned embodiments are denoted by the same or similar components, and the related descriptions of the same or similar components are referred to the foregoing, and are not described herein again.

As shown in FIG. 5, the display device 50 is, for example, an organic light emitting diode display device, and the display panel 100 is, for example, an organic light emitting diode display panel. The organic light emitting diode display device (display device 50) includes an organic light emitting diode display panel (display panel 100) and a coating type retardation layer 600, and the coating type retardation layer 600 is disposed on the organic light emitting diode On the display panel. The coating type retardation layer 600 includes a liquid crystal material layer and a photosensitive material, and the photosensitive material is mixed in the liquid crystal material layer. The coating type phase difference layer 600 has a first phase difference region and a second phase difference region, and the first phase difference region and the second phase difference region have different phase differences. The coating type retardation layer 600 is, for example, a circularly polarizing layer having a phase retardation of 1/4λ or 3/4λ.

In an embodiment, as shown in FIG. 5, the display device 50 further includes a polarizing layer 700 disposed on the coating type retardation layer 600. In this embodiment, the polarizing layer 700 may be selected from a conventional polarizing film layer, such as a polyvinyl alcohol film.

FIG. 6 is a schematic view showing a coating type retardation layer according to an embodiment of the present disclosure. The same or similar components as those of the above-mentioned embodiments are denoted by the same or similar components, and the related descriptions of the same or similar components are referred to the foregoing, and are not described herein again.

As shown in FIG. 6, the coating type phase difference layer 600 has a first phase difference region 610 and a second phase difference region 620, and the first phase difference region 610 and the second phase difference region 620 have different phase differences.

In one embodiment, the liquid crystal material layer of the coating type retardation layer 600 includes a plurality of liquid crystal molecules, and the liquid crystal molecules in the first phase difference region 610 and the liquid crystal molecules in the second phase difference region 620 have different alignment angles. As shown in FIG. 6, the liquid crystal molecules in the first phase difference region 610 have an alignment angle 610a and a second phase difference region. The liquid crystal molecules in 620 have an alignment angle 620a, and the alignment angle 610a and the alignment angle 620a are different. In the embodiment, all liquid crystal molecules in a single region have the same alignment angle.

In another embodiment, the liquid crystal molecules in the first phase difference region 610 and the liquid crystal molecules in the second phase difference region 620 may also have different material types.

In some embodiments, the liquid crystal molecules in the first phase difference region 610 and the liquid crystal molecules in the second phase difference region 620 may have the same alignment angle and have different material types, or have different alignment angles and have the same material type. Can have completely different alignment angles and material types.

In some embodiments, the coated retardation layer 600 may further include a substrate (not shown), and the liquid crystal material layer is coated on the substrate to form the coated retardation layer 600. In an embodiment, the substrate may include, for example, a cellulose triacetate layer (TAC), a polymethyl methacrylate layer (PMMA), a cyclic olefin polymer layer (COP), and a polyethylene terephthalate (PET). ), at least one of a plastic substrate and a soft glass.

In some embodiments, the material of the coating type retardation layer 600 may also be first coated on a carrier, after the material is cured, a coating type retardation layer 600 is formed, and then the carrier is coated from the coating type retardation layer 600. The coating type retardation layer 600, which does not have any carrier material at this time, can be attached to the display panel 100.

In some embodiments, the material of the coating type retardation layer 600 may also be directly applied onto the display panel 100, and then the material is cured to form a coating type retardation layer 600 on the display panel 100.

In an embodiment, the coating type retardation layer 600 includes a liquid crystal material layer and a photosensitive material, and the photosensitive material is mixed in the liquid crystal material layer, that is, The coating type retardation layer 600 of the embodiment is, for example, a light-aligned liquid crystal coating layer. In one embodiment, the thickness of the coating type retardation layer 600 of the liquid crystal coating layer is, for example, 1 to 50 μm. In another embodiment, the thickness of the coating type retardation layer 600 of the liquid crystal coating layer is, for example, 1 to 5 μm.

In the embodiment, the display device 50 is, for example, an organic light emitting diode display device, and the thickness of the organic light emitting diode display device (display device 50) provided with the coating type retardation layer 600 is, for example, less than 100 μm.

In the embodiment shown in FIG. 6, the first phase difference region 610 and the second phase difference region 620 of the coating type phase difference layer 600 have a stripe pattern. In some other embodiments, the first phase difference region 610 and the second phase difference region 620 may have a stripe pattern, a circular pattern, or an irregular pattern, respectively. However, in actual application, the patterns of the first phase difference region 610 and the second phase difference region 620 may be appropriately selected as needed, and are not limited to the aforementioned pattern types. In an embodiment, the first phase difference region 610 and the second phase difference region 620 are periodically arranged.

In the foregoing embodiment, the coating type retardation layer 600 has two phase difference regions having different phase differences. In still other embodiments, the coating type retardation layer 600 may have three or more phase difference regions having different phase differences. However, in practical applications, the number of phase difference regions having different phase differences may also be appropriately selected as needed, and is not limited to the foregoing number.

7A-7B are diagrams showing a reflected viewing angle luminance according to an embodiment of the present disclosure. 7A is a simulation result of the organic light-emitting diode display device without the coating-coated phase difference layer 600 having a region coating, and FIG. 7B is a view showing the coating-type phase difference layer 600 having a regional coating. Simulation results of the organic light emitting diode display device. The denser the distribution of the dots, the higher the light transmittance. The more evacuated the point distribution, the lower the light reflection, and both graphs show a dark state.

As shown in FIG. 7A, when the phase difference layer 500 is not coated, the light reflection in the upper viewing angle (90°) and the lower viewing angle (270°) direction is significantly larger than the side viewing angle (0° and 180°) directions. The light reflects strongly and therefore has a high light reflectivity. However, in the case of the coating-type retardation layer 600 having a region coating, the uniformity of luminance distribution in the four viewing angles (0°, 90°, 180°, 270°) is greatly improved. Accordingly, according to an embodiment of the present disclosure, the arrangement of the regionally coated coating type retardation layer 600 can reduce the uneven color shifting condition of each viewing angle, so that the omnidirectional side viewing angle has uniform brightness. The overall reflection brightness and the reflected hue of the display surface are adjusted to achieve uniform optical performance in each area.

FIG. 8 is a cross-sectional view showing a display device according to a further embodiment of the present disclosure. The same or similar components as those of the above-mentioned embodiments are denoted by the same or similar components, and the related descriptions of the same or similar components are referred to the foregoing, and are not described herein again.

As shown in FIG. 8, the display device 80 is, for example, an organic light emitting diode display device, and the display panel 100 is, for example, an organic light emitting diode display panel. The display device 80 includes a display panel 100, a substrate 400, a coating type polarizing layer 200, a coating type retardation layer 600, and a glue layer 300. The coating type polarizing layer 200 is applied onto the substrate 400, the coating type retardation layer 600 is bonded to the display panel 100 via the adhesive layer 300, and the coating type polarizing layer 200 and the substrate 400 are bonded to each other via the other adhesive layer 300. Coating type retardation layer 600. The coating type retardation layer 600 is provided between the display panel 100 and the coating type polarizing layer 200. In an embodiment, the substrate 400 can also be removed after bonding.

In the embodiment shown in FIG. 8, the coating type retardation layer 600 has a first phase difference region and a second phase difference region, and the first phase difference region and the second phase difference region have different phase differences. Moreover, the coating type polarizing layer 200 has a first region, a second region, and a third region, respectively corresponding to the first pixel region, the second pixel region, and the third painting of the organic light emitting diode display panel. a first region, a second region, and a third region having maximum light transmittance, first wavelength, respectively, with respect to light having a first wavelength range, light having a second wavelength range, and light having a third wavelength range At least two of the range, the second wavelength range, and the third wavelength range are different.

FIG. 9 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure. The same or similar components as those of the above-mentioned embodiments are denoted by the same or similar components, and the related descriptions of the same or similar components are referred to the foregoing, and are not described herein again.

As shown in FIG. 9, the display device 90 is, for example, an organic light emitting diode display device, and the display panel 100 is, for example, an organic light emitting diode display panel. The display device 90 includes a display panel 100, a coating type polarizing layer 200, a coating type retardation layer 600, and a glue layer 300. The coating type retardation layer 600 is bonded to the display panel 100 via the adhesive layer 300, and the coating type polarizing layer 200 is directly applied or bonded to the coating type retardation layer 600. The coating type retardation layer 600 is provided between the display panel 100 and the coating type polarizing layer 200.

In summary, according to an embodiment of the present disclosure, a dye material and a photosensitive material are mixed in a liquid crystal material layer to form a coating-type polarizing layer, and different regions of the coating-type polarizing layer correspond to different pixel regions of the display panel. Absorbing light having different wavelength ranges, so not only has good polarizing effect, but also the regionalized design of the coating type polarizing layer can provide a more uniform optical display effect, and the coating of the liquid crystal coating layer The polarizing layer can further achieve the thinning effect of the display device. Furthermore, the photosensitive material is mixed in the liquid crystal material layer to form a coating type retardation layer, and different regions of the coating type retardation layer have different phase differences, and the coating of the coating type retardation layer can be set. The display surface has uniform brightness in the omnidirectional side view angle, and achieves the uniform optical performance of each area.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

50‧‧‧ display device

100‧‧‧ display panel

300‧‧ ‧ adhesive layer

600‧‧‧Coated phase difference layer

700‧‧‧ polarizing layer

Claims (10)

A display device comprising: a display panel; and a coating type retardation layer disposed on the display panel, the coating type retardation layer comprising a liquid crystal material layer and a photosensitive material, wherein the photosensitive material is mixed In the liquid crystal material layer; wherein the coating type retardation layer has a first phase difference region and a second phase difference region, the first phase difference region and the second phase difference region have different phase differences. The display device of claim 1, wherein the liquid crystal material layer comprises a plurality of liquid crystal molecules, and the liquid crystal molecules in the first phase difference region and the liquid crystal molecules in the second phase difference region have Different alignment angles. The display device of claim 1, wherein the liquid crystal material layer comprises a plurality of liquid crystal molecules, and the liquid crystal molecules in the first phase difference region and the liquid crystal molecules in the second phase difference region have Different material types. The display device of claim 1, wherein the coated retardation layer further comprises a substrate, and the liquid crystal material layer is coated on the substrate. The display device of claim 4, wherein the substrate comprises a cellulose triacetate layer (TAC), a polymethyl methacrylate layer (PMMA), a cyclic olefin polymer layer (COP), and a polymer. At least one of ethylene terephthalate (PET), a plastic substrate, and a soft glass. The display device according to claim 1, wherein the coating type retardation layer has a thickness of 1 to 50 micrometers (μm). The display device of claim 1, wherein the display device is an organic light emitting diode display device having a thickness of less than 100 micrometers. The display device of claim 1, wherein the first phase difference region and the second phase difference region respectively have at least one of a stripe pattern, a circular pattern, or an irregular pattern, and/or the The first phase difference zone and the second phase difference zone are periodically arranged. The display device according to claim 1, further comprising: a coating type polarizing layer disposed on the coating type retardation layer. The display device of claim 9, wherein the display panel has a first pixel area, a second pixel area and a third pixel area, the coating type polarizing layer having a first area a second region and a third region respectively corresponding to the first pixel region, the second pixel region, and the third pixel region, wherein the first region, the second region, and the third region respectively Having a maximum light transmittance with respect to light having a first wavelength range, light having a second wavelength range, and light having a third wavelength range, the first wavelength range, the second wavelength range, and the third At least two of the wavelength ranges are different.