Vertical alignment liquid crystal display panel structure

Abstract

The invention discloses a vertical alignment liquid crystal display panel structure which comprises an array substrate, a reflecting layer, a liquid crystal layer, an upper substrate and a liquid crystal molecule control unit, a micro-structure part and a light-permeable flat part are formed on the top of the array substrate, the reflecting layer is arranged on the micro-structure part, and the liquid crystal layer is arranged on the upper substrate. The liquid crystal layer is arranged above the reflecting layer and the flat part, the liquid crystal layer comprises a plurality of vertical alignment type liquid crystal molecules, the upper substrate is arranged above the liquid crystal layer, the liquid crystal molecule control unit is arranged at the bottom of the upper substrate, and the liquid crystal molecule control unit corresponds to the flat part. And the flat part and the liquid crystal molecule control unit are used for controlling the dumping direction of the plurality of vertical alignment type liquid crystal molecules, so that the purpose of improving the contrast ratio of a penetration area and the visual angle of the vertical alignment type liquid crystal display is achieved.

Description

Technical Field

[0001] The invention relates to a display panel structure, and in particular to a vertically aligned liquid crystal display panel structure. Background Art

[0002] The panel structure of a known vertical alignment (VA) liquid crystal display includes an array substrate, a liquid crystal layer and an upper substrate. A microstructure portion is formed on the top of the array substrate, the liquid crystal layer is arranged above the microstructure portion, the liquid crystal layer includes a plurality of vertical alignment liquid crystal molecules, and the upper substrate is arranged above the microstructure portion. In the prior art, a reflective metal layer is arranged on the surface of the microstructure portion to form a reflective area, and a penetrating opening area is formed by removing part of the reflective metal layer, so that light from a backlight module arranged below the array substrate can pass through.

[0003] However, in the prior art, the shape of the microstructure in the through-opening area will cause the tilting direction of the vertically aligned liquid crystal molecules in the through-opening area to be disorderly and irregular, resulting in a decrease in the through-opening area contrast and poor viewing angle of the VA liquid crystal display.

[0004] Therefore, it is necessary to propose a better solution to solve the problems of reduced contrast and poor viewing angle in the penetration area of ​​the VA liquid crystal display in the above-mentioned prior art. Summary of the invention

[0005] In view of the above-mentioned deficiencies of the prior art, the main purpose of the present invention is to provide a vertically aligned liquid crystal display panel structure, which improves the architecture of the panel structure and solves the problems of decreased contrast and poor viewing angle in the transmission area of ​​vertical alignment (VA) liquid crystal displays.

[0006] In order to solve the above problems of the prior art, the main technical solution adopted by the present invention is to make the aforementioned vertically aligned liquid crystal display panel structure include: An array substrate, a microstructure portion and a light-transmissive flat portion are formed on the top of the array substrate; a reflective layer disposed on the microstructure portion; a liquid crystal layer disposed above the microstructure portion and the flat portion, wherein the liquid crystal layer includes a plurality of vertically aligned liquid crystal molecules; an upper substrate disposed above the liquid crystal layer; and A liquid crystal molecule control unit is arranged at the bottom of the upper substrate and corresponds to the position of the flat portion.

[0007] Preferably, the array substrate comprises: A transparent substrate; an array layer disposed on the lower transparent substrate; an isolation layer, which is disposed on the array layer, wherein the microstructure portion and the flat portion are formed on the top of the isolation layer; and A lower transparent electrode layer is disposed on the microstructure portion and the flat portion. The lower transparent electrode layer includes a light-transmitting layer, and the light-transmitting layer matches the flat portion.

[0008] Preferably, the liquid crystal molecule control unit is centered at a position corresponding to the flat portion.

[0009] Preferably, the light-transmitting layer is in a circular or square shape.

[0010] Preferably, when the light-transmitting layer is in the circular shape, the reflective layer surrounds the light-transmitting layer, and there is a first distance from the liquid crystal molecule control unit to the reflective layer.

[0011] Preferably, the light-transmitting layer further has an annular reflective layer, a third distance exists between the liquid crystal molecule control unit and the reflective layer, and a first distance exists between the annular reflective layer and the reflective layer.

[0012] Preferably, the light-transmitting layer further has a circular reflective layer, the light-transmitting layer surrounds the circular reflective layer, the liquid crystal molecule control unit corresponds to the center position of the circular reflective layer, and there is a fourth distance from the liquid crystal molecule control unit to the reflective layer, and there is a second distance between the circular reflective layer and the reflective layer.

[0013] Preferably, a plurality of connecting sections are formed between the circular reflective layer and the reflective layer, and a seventh distance exists between the liquid crystal molecule control unit and the reflective layer.

[0014] Preferably, when the light-transmitting layer is in the shape of a square, there is a second distance from the liquid crystal molecule control unit to the reflective layer.

[0015] Preferably, the light-transmitting layer further has a circular reflective layer, and there is a fifth distance from the liquid crystal molecule control unit to the reflective layer.

[0016] Preferably, the circular reflective layer in the light-transmitting layer is further replaced by a square reflective layer, a sixth distance exists between the liquid crystal molecule control unit and the reflective layer, and a third distance exists between the square reflective layer and the reflective layer.

[0017] Preferably, a plurality of connecting sections are formed between the square reflective layer and the reflective layer, and an eighth distance exists from the liquid crystal molecule control unit to the reflective layer.

[0018] Preferably, the plurality of connecting sections are further extended so that the light-transmitting layer forms a plurality of long strips, and a ninth distance exists from the liquid crystal molecule control unit to the light-transmitting layer.

[0019] Preferably, the upper substrate comprises: an upper transparent electrode layer, which is arranged on the liquid crystal layer, the upper transparent electrode layer forms the bottom of the upper substrate, and the liquid crystal molecule control unit is arranged on the lower surface of the upper transparent electrode layer; a filling layer, which is disposed on the upper transparent electrode layer; a filter layer, which is disposed on the filling layer; and An upper transparent substrate is disposed on the filter layer.

[0020] Preferably, the liquid crystal molecule control unit is further arranged on the lower surface of the upper transparent electrode layer and corresponds to the position of the microstructure portion, and the lower transparent electrode layer and the reflective layer form a plurality of slits, and the plurality of slits are respectively located between adjacent liquid crystal molecule control units.

[0021] The present invention forms the light-transmissive flat portion on the top of the array substrate, and the liquid crystal molecule control unit is disposed at a corresponding position on the bottom of the upper substrate. The flat portion and the liquid crystal molecule control unit are used to control the tilting direction of the majority of vertically aligned liquid crystal molecules, thereby achieving the purpose of improving the contrast ratio and viewing angle of the penetration area of ​​the vertically aligned liquid crystal display. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of an embodiment of a panel structure of the present invention. Figure 2 FIG. 4 is another schematic diagram of an embodiment of a panel structure of the present invention. Figure 3 FIG. 1 is a schematic diagram of a first embodiment of a panel structure of the present invention. Figure 4 FIG. 2 is a schematic diagram of a second embodiment of the panel structure of the present invention. Figure 5 FIG. 4 is a schematic diagram of a third embodiment of the panel structure of the present invention. Figure 6 FIG. 4 is a schematic diagram of a fourth embodiment of the panel structure of the present invention. Figure 7 It is a schematic diagram of a fifth aspect of an embodiment of the panel structure of the present invention. Figure 8 FIG. 6 is a schematic diagram of a sixth embodiment of the panel structure of the present invention. Fig. 9FIG. 7 is a schematic diagram of a seventh embodiment of the panel structure of the present invention. Fig.10 FIG. 8 is a schematic diagram of an eighth embodiment of the panel structure of the present invention. Fig.11 It is a schematic diagram of a ninth aspect of an embodiment of the panel structure of the present invention. Fig.12 It is another schematic diagram of an embodiment of the panel structure of the present invention. DETAILED DESCRIPTION

[0023] For an embodiment of the vertically aligned liquid crystal display panel structure of the present invention, please refer to Figure 1 , which includes an array substrate 10, a reflective layer 20, a liquid crystal layer 30, an upper substrate 40 and a liquid crystal molecule control unit 50; a microstructure portion 11 and a light-transmissive flat portion 12 are formed on the top of the array substrate 10, and the microstructure portion 11 surrounds the flat portion 12; the reflective layer 20 is arranged on the microstructure portion 11, the range covered by the reflective layer 20 constitutes a reflective area, and the range formed by the flat portion 12 constitutes a penetration area; the liquid crystal layer 30 is arranged above the microstructure portion 11 and the flat portion 12, and the liquid crystal layer 30 includes a plurality of vertically aligned liquid crystal molecules 31; the upper substrate 40 is arranged above the liquid crystal layer 30; the liquid crystal molecule control unit 50 is arranged at the bottom of the upper substrate 40, and corresponds to the position of the penetration area of ​​the flat portion 12.

[0024] Therefore, the present invention forms the flat portion 12 on the top of the array substrate 10, and the liquid crystal molecule control unit 50 is arranged on the bottom of the upper substrate 40, and the liquid crystal molecule control unit 50 corresponds to the flat portion 12. The flat portion 12 and the liquid crystal molecule control unit 50 are used to control the tilting direction of the majority of vertically aligned liquid crystal molecules 31, which can improve the penetration zone contrast and viewing angle of the vertically aligned liquid crystal display.

[0025] See also Figure 2In this embodiment, the array substrate 10 includes a lower transparent substrate 16, an array layer 15, an isolation layer 13 and a lower transparent electrode layer 14; wherein the array layer 15 is disposed on the lower transparent substrate 16, the isolation layer 13 is disposed on the array layer 15, and a photomask process is performed on the top surface of the isolation layer 13 to form the microstructure part 11 and the flat part 12 of the array substrate 10. Further, the lower transparent electrode layer 14 is disposed on the microstructure part 11 and the flat part 12 of the array substrate 10 in a shape-matched manner, and the material used for the lower transparent electrode layer 14 can be indium tin oxide (ITO). In this embodiment, the lower transparent electrode layer 14 includes a light-transmitting layer 141, and the range and position of the light-transmitting layer 141 match the penetration area of ​​the flat part 12.

[0026] In the present embodiment, the isolation layer 13 is provided on the array layer 15. The isolation layer 13 is used to isolate the array layer 15 from the reflective layer 20 and the lower transparent electrode layer 14 to avoid signal interference. Usually, the array layer 15 includes a plurality of active components, a plurality of gate lines and a plurality of data lines. The plurality of active components are arranged in an array and are electrically connected to the plurality of gate lines and the plurality of data lines respectively. In the present embodiment, the lower transparent substrate 16 can be made of a glass material to enhance the light transmission effect.

[0027] In addition, in the specific application of this embodiment, Figure 2 As shown, a backlight module 60 is also included. The backlight module 60 is disposed below the lower transparent substrate 16. The backlight module 60 is used to provide light so that the present invention utilizes light for display.

[0028] In this embodiment, Figure 2As shown, the upper substrate 40 includes an upper transparent electrode layer 41, a filling layer 42, a filter layer 43 and an upper transparent substrate 44; the upper transparent electrode layer 41 is arranged above the liquid crystal layer 30, and the upper transparent electrode layer 41 constitutes the bottom of the upper substrate 40, the filling layer 42 is arranged above the upper transparent electrode layer 41, the filter layer 43 is arranged above the filling layer 42, the filling layer 42 is used to flatten the bottom of the filter layer 43, the upper transparent substrate 44 is arranged above the filter layer 43, and the upper transparent substrate 44 can be made of a glass material to enhance the light transmission effect. In this embodiment, the material used for the upper transparent electrode layer 41 includes indium tin oxide (ITO); in this embodiment, the liquid crystal molecule control unit 50 is arranged on the lower surface of the upper transparent electrode layer 41, and the liquid crystal molecule control unit 50 is centered at the position of the penetration area corresponding to the flat portion 12. The liquid crystal molecule control unit 50 is composed of an arc-shaped convex portion, which can improve the control effect.

[0029] By setting the flat portion 12 and the liquid crystal molecule control unit 50, the arrangement of the majority of vertically aligned liquid crystal molecules 31 within the penetration zone is not affected by the microstructure portion 11. The liquid crystal molecule control unit 50 and the flat portion 12 can control the tilting direction of the majority of vertically aligned liquid crystal molecules 31 within the penetration zone, so that the majority of vertically aligned liquid crystal molecules 31 within the penetration zone are evenly diffused and arranged outward with the liquid crystal molecule control unit 50 as the center, thereby improving the contrast and viewing angle of the penetration zone of the present invention.

[0030] To further illustrate the various forms and applications of this embodiment, please refer to Figure 3 , which is the first shape state in this embodiment, the liquid crystal molecule control unit 50 has a radius distance a, the radius distance a is between 1 and 20 micrometers (μm), and the liquid crystal molecule control unit 50 is centered at the position corresponding to the light-transmitting layer 141. In this embodiment, the light-transmitting layer 141 is in a circular shape, and the reflective layer 20 surrounds the light-transmitting layer 141. There is a first distance s1 from the radius distance a of the liquid crystal molecule control unit 50 to the reflective layer 20, and the first distance s1 is between 2 and 150 μm. In this embodiment, the radius distance a of the liquid crystal molecule control unit 50 and the first distance s1 constitute the radius distance of the light-transmitting layer 141.

[0031] Please refer to Figure 4 As shown, regarding the second shape state sample in this embodiment, it is different from the first shape state sample (such as Figure 3The technical contents of the embodiment of the present invention are substantially the same as those of the embodiment of the present invention, but the main difference is that the light-transmitting layer 141 is in a square shape, and there is a second distance s2 from the radius a of the liquid crystal molecule control unit 50 to the reflective layer 20, and the second distance s2 is between 2 and 150 μm.

[0032] Please refer to Figure 5 As shown, regarding the third shape state sample in this embodiment, it is different from the first shape state sample (such as Figure 3 The technical contents of the embodiment of the present invention are substantially the same as those of the embodiment of the present invention, but the main difference is that the light-transmitting layer 141 further includes an annular reflective layer 20', and there is a third distance s3 from the radius a of the liquid crystal molecule control unit 50 to the reflective layer 20, and the third distance s3 is between 2 and 150 μm. In addition, there is a first spacing b1 between the annular reflective layer 20' and the reflective layer 20, and the first spacing b1 is between 2 and 150 μm.

[0033] Please refer to Figure 6 As shown, regarding the fourth shape state in this embodiment, it is different from the first shape state (such as Figure 3 The technical contents of the present invention are roughly the same as those of the present invention, but the main difference is that a circular reflective layer 20'' is further provided in the light-transmitting layer 141, the light-transmitting layer 141 surrounds the circular reflective layer 20'', the liquid crystal molecule control unit 50 is located at the center of the circular reflective layer 20'', and there is a fourth distance s4 from the radius a of the liquid crystal molecule control unit 50 to the reflective layer 20, and the fourth distance s4 is between 2 and 150 μm. In addition, there is a second spacing b2 between the circular reflective layer 20'' and the reflective layer 20, and the second spacing b2 is between 2 and 150 μm.

[0034] Please refer to Figure 7 As shown, regarding the fifth shape state in this embodiment, it is different from the second shape state (such as Figure 4 The technical contents of the embodiment of the present invention are substantially the same as those shown in the figure, but the main difference is that the light-transmitting layer 141 further comprises the circular reflective layer 20", and there is a fifth distance s5 from the radius a of the liquid crystal molecule control unit 50 to the reflective layer 20, and the fifth distance s5 is between 2 and 150 μm.

[0035] Please refer to Figure 8 As shown, regarding the sixth shape state in this embodiment, it is different from the fifth shape state (such as Figure 7The technical content of the embodiment of the present invention is substantially the same as that of the embodiment of the present invention, but the main difference is that the circular reflective layer 20" in the light-transmitting layer 141 is further replaced by a square reflective layer 20"', and there is also a sixth distance s6 from the radius a of the liquid crystal molecule control unit 50 to the reflective layer 20, and the sixth distance s6 is between 2 and 150 μm. In addition, there is a third spacing b3 between the square reflective layer 20"' and the reflective layer 20, and the third spacing b3 is between 2 and 150 μm.

[0036] Please refer to Fig. 9 As shown, regarding the seventh shape state in this embodiment, it is different from the fourth shape state (such as Figure 6 The technical contents of the embodiment of the present invention are substantially the same as those of the embodiment of the present invention, but the main difference is that a plurality of connecting segments 201 are formed between the circular reflecting layer 20″ and the reflecting layer 20, the plurality of connecting segments 201 are arranged at intervals, and there is also a seventh distance s7 from the radius a of the liquid crystal molecule control unit 50 to the reflecting layer 20, and the seventh distance s7 is between 2 and 150 μm.

[0037] Please refer to Fig.10 As shown, regarding the eighth shape state pattern in this embodiment, it is different from the fifth shape state pattern (such as Figure 8 The technical contents of the embodiment of the present invention are roughly the same as those of the embodiment of the present invention, but the main difference is that a plurality of connecting sections 201' are formed between the square reflecting layer 20"' and the reflecting layer 20, and there is an eighth distance s8 from the radius a of the liquid crystal molecule control unit 50 to the reflecting layer 20, and the eighth distance s8 is between 2 and 150 μm.

[0038] Please refer to Fig.11 As shown, regarding the ninth shape state pattern in this embodiment, it is respectively different from the seventh shape state pattern (such as Fig. 9 As shown), the eighth type state (as shown Fig.10 The technical contents of the embodiment of the present invention are roughly the same as those of the embodiment of the present invention, but the main difference is that the shapes and sizes of the plurality of connected segments 201, 201' are significantly different. In this embodiment, the plurality of connected segments 201, 201' are further extended, so that the shape of the light-transmitting layer 141 is changed, and the light-transmitting layer 141 is formed into a plurality of long strips, which are radially extended outward from the liquid crystal molecule control unit 50 as the center. There is a ninth distance s9 from the radial distance a of the liquid crystal molecule control unit 50 to the outermost end of the light-transmitting layer 141 in the horizontal direction, and the ninth distance s9 is between 2 and 150 μm. In addition, each long strip of the light-transmitting layer 141 has a width w1, and the width w1 is between 2 and 150 μm.

[0039] In this example, see Fig.12The liquid crystal molecule control unit 50 can be further arranged on the lower surface of the upper transparent electrode layer 41 and correspond to the position of the microstructure portion 11. The lower transparent electrode layer 14 and the reflective layer 20 are formed with a plurality of slits 142, and the plurality of slits 142 are respectively located between adjacent liquid crystal molecule control units 50. The majority of slits 142 will generate curved electric lines so that the majority of vertically aligned liquid crystal molecules 31 adjacent to the majority of slits 142 will be arranged along the direction of the majority of slits 142 and tilted toward both sides, thereby separating the majority of vertically aligned liquid crystal molecules 31 between adjacent liquid crystal molecule control units 50, and the liquid crystal molecule control unit 50 will respectively control the tilting direction of the majority of vertically aligned liquid crystal molecules 31 within the range of the reflection area of ​​the reflection layer 20 and the range of the penetration area of ​​the flat portion 12, so that the majority of vertically aligned liquid crystal molecules 31 within the range of the reflection area and the range of the penetration area are respectively arranged and diffused outward evenly with the liquid crystal molecule control unit 50 as the center, thereby producing a multi-domain alignment effect, further improving the viewing angle of the present invention.

Claims

1. A vertically aligned liquid crystal display panel structure, characterized in that: include: An array substrate, a microstructure portion and a light-transmissive flat portion are formed on the top of the array substrate; a reflective layer disposed on the microstructure portion; a liquid crystal layer disposed above the microstructure portion and the flat portion, wherein the liquid crystal layer includes a plurality of vertically aligned liquid crystal molecules; an upper substrate disposed above the liquid crystal layer; and A liquid crystal molecule control unit is arranged at the bottom of the upper substrate and corresponds to the position of the flat portion.

2. The vertically aligned liquid crystal display panel structure according to claim 1, characterized in that: The array substrate comprises: A transparent substrate; an array layer disposed on the lower transparent substrate; an isolation layer, which is disposed on the array layer, wherein the microstructure portion and the flat portion are formed on the top of the isolation layer; and A lower transparent electrode layer is disposed on the microstructure portion and the flat portion. The lower transparent electrode layer includes a light-transmitting layer, and the light-transmitting layer matches the flat portion.

3. The vertically aligned liquid crystal display panel structure according to claim 1, characterized in that: The liquid crystal molecule control unit is centered at a position corresponding to the flat portion.

4. The vertically aligned liquid crystal display panel structure according to claim 2, characterized in that: The light-transmitting layer is in a circular or square shape.

5. The vertically aligned liquid crystal display panel structure according to claim 4, characterized in that: When the light-transmitting layer is in the circular shape, the reflective layer surrounds the light-transmitting layer, and there is a first distance from the liquid crystal molecule control unit to the reflective layer.

6. The vertically aligned liquid crystal display panel structure according to claim 5, characterized in that: The light-transmitting layer further has an annular reflective layer, a third distance exists between the liquid crystal molecule control unit and the reflective layer, and a first distance exists between the annular reflective layer and the reflective layer.

7. The vertically aligned liquid crystal display panel structure according to claim 5, characterized in that: The light-transmitting layer further has a circular reflective layer, the light-transmitting layer surrounds the circular reflective layer, the liquid crystal molecule control unit corresponds to the center position of the circular reflective layer, and there is a fourth distance from the liquid crystal molecule control unit to the reflective layer, and there is a second distance between the circular reflective layer and the reflective layer.

8. The vertically aligned liquid crystal display panel structure according to claim 7, characterized in that: A plurality of connecting sections are formed between the circular reflecting layer and the reflecting layer, and a seventh distance exists between the liquid crystal molecule control unit and the reflecting layer.

9. The vertically aligned liquid crystal display panel structure according to claim 4, characterized in that: When the light-transmitting layer is in the square shape, and there is a second distance from the liquid crystal molecule control unit to the reflective layer.

10. The vertically aligned liquid crystal display panel structure according to claim 9, characterized in that: A circular reflective layer is further provided in the light-transmitting layer, and a fifth distance exists between the liquid crystal molecule control unit and the reflective layer.

11. The vertically aligned liquid crystal display panel structure according to claim 9, characterized in that: The circular reflective layer in the light-transmitting layer is further replaced by a square reflective layer, a sixth distance exists between the liquid crystal molecule control unit and the reflective layer, and a third distance exists between the square reflective layer and the reflective layer.

12. The vertically aligned liquid crystal display panel structure according to claim 11, characterized in that: A plurality of connecting sections are formed between the square reflecting layer and the reflecting layer, and an eighth distance exists between the liquid crystal molecule control unit and the reflecting layer.

13. The vertically aligned liquid crystal display panel structure according to claim 8 or 12, characterized in that: The plurality of connecting sections are further extended so that the light-transmitting layer forms a plurality of long strips, and a ninth distance exists from the liquid crystal molecule control unit to the light-transmitting layer.

14. The vertically aligned liquid crystal display panel structure according to claim 2, characterized in that: The upper substrate comprises: an upper transparent electrode layer, which is arranged on the liquid crystal layer, the upper transparent electrode layer forms the bottom of the upper substrate, and the liquid crystal molecule control unit is arranged on the lower surface of the upper transparent electrode layer; a filling layer, which is disposed on the upper transparent electrode layer; a filter layer, which is disposed on the filling layer; and An upper transparent substrate is disposed on the filter layer.

15. The vertically aligned liquid crystal display panel structure according to claim 14, characterized in that: The liquid crystal molecule control unit is further arranged on the lower surface of the upper transparent electrode layer and corresponds to the position of the microstructure part. The lower transparent electrode layer and the reflective layer are formed with a plurality of slits, and the plurality of slits are respectively located between adjacent liquid crystal molecule control units.

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