CN109031817B

CN109031817B - Liquid crystal display panel

Info

Publication number: CN109031817B
Application number: CN201811137451.4A
Authority: CN
Inventors: 黄北洲
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2021-06-18
Anticipated expiration: 2038-09-28
Also published as: WO2020062461A1; CN109031817A

Abstract

The invention relates to a liquid crystal display panel, wherein first transistors are arranged on the surface of a first substrate which is arranged at intervals, and second transistors are arranged on the surface of a second substrate which is arranged at intervals, so that the first transistors and the second transistors are arranged at intervals correspondingly. Because the two transistors corresponding to every two adjacent sub-pixels are the first transistor and the second transistor respectively, when the light of the backlight source of the liquid crystal display panel passes through every two adjacent sub-pixels, the light is only influenced by the size and the area of one transistor. Compared with the traditional liquid crystal display panel, the influence of the size area of one transistor on the aperture ratio is reduced. Therefore, the aperture opening ratio of the liquid crystal display panel is improved on the premise of not influencing the resolution ratio of the liquid crystal display panel.

Description

Liquid crystal display panel

Technical Field

The invention relates to the technical field of liquid crystal display panel display, in particular to a liquid crystal display panel.

Background

With the development of the liquid crystal panel display technology, the high resolution display technology can provide better display quality and more realistic display effect to users. The resolution is the number of pixels displayed on the display panel, and the higher the resolution is, the finer and finer the display effect is, in the case of the same screen size. At present, the requirement for high resolution of liquid crystal display panels is increasing, and for example, 2K screens have appeared on small-sized display panels to far exceed the requirement of human eyes for resolution.

However, in a liquid crystal display panel, especially a large-sized display panel, the improvement of the resolution is affected by a low aperture ratio, and it is difficult to improve the resolution of the display panel in a case where the aperture ratio is low.

Disclosure of Invention

Accordingly, it is necessary to provide a liquid crystal display panel in which the improvement of the resolution is affected by a low aperture ratio and it is difficult to improve the resolution of the display panel in the case where the aperture ratio is low.

A liquid crystal display panel comprises a plurality of sub-pixels, a first substrate, a second substrate and a plurality of transistors; the two transistors corresponding to every two adjacent sub-pixels are respectively a first transistor and a second transistor;

the first substrate and the second substrate are arranged at intervals;

the first transistors and the second transistors are arranged at intervals correspondingly, the first transistors are arranged on the surface of the first substrate, and the second transistors are arranged on the surface of the second substrate.

In the liquid crystal display panel, the first transistors are arranged on the surface of the first substrate arranged at intervals, and the second transistors are arranged on the surface of the second substrate arranged at intervals, so that the first transistors and the second transistors are arranged at intervals correspondingly. Because the two transistors corresponding to every two adjacent sub-pixels are the first transistor and the second transistor respectively, when the light of the backlight source of the liquid crystal display panel passes through every two adjacent sub-pixels, the light is only influenced by the size and the area of one transistor. Compared with the traditional liquid crystal display panel, the influence of the size area of one transistor on the aperture ratio is reduced. Therefore, the aperture opening ratio of the liquid crystal display panel is improved on the premise of not influencing the resolution ratio of the liquid crystal display panel.

In one embodiment, the first transistor is disposed on an inner surface of the first substrate, and the second transistor is disposed on an inner surface of the second substrate.

In one embodiment, the device further comprises a plurality of first pad layers, and each pad layer corresponds to the first transistor one by one; the first transistor and the second transistor are arranged at intervals through a first cushion layer;

the closed space on the first side of the first cushion layer is used for filling first liquid crystal molecules, and the closed space on the second side of the first cushion layer is used for filling second liquid crystal molecules; the first liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixels corresponding to the first transistors, and the second liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixels corresponding to the second transistors.

In one embodiment, the display device further comprises a first pixel electrode and a second pixel electrode; the first transistor is connected with the first pixel electrode, and the second transistor is connected with the second pixel electrode;

the first pixel electrode is arranged on the inner surface of the first substrate on the first side of the first cushion layer;

the second pixel electrode is arranged on the inner surface of the second substrate on the second side of the first cushion layer.

In one embodiment, the device further comprises a first common electrode and a second common electrode; the first transistor is connected with the first common electrode, and the second transistor is connected with the second common electrode;

the first common electrode is arranged on the inner surface of the second substrate on the first side of the first cushion layer;

the second common electrode is arranged on the inner surface of the first substrate on the second side of the first cushion layer.

In one embodiment, the color filter further comprises a first color filter and a third substrate;

the third substrate is arranged at intervals with the outer surface of the first substrate through the first color filter; the first color filter is arranged corresponding to each sub-pixel.

In one embodiment, the display device further comprises a fourth substrate;

the outer surface of the first substrate and the fourth substrate are arranged at intervals;

the first transistor is arranged on the outer surface of the first substrate, and the second transistor is arranged on the inner surface of the second substrate. The outer surface of the first substrate is a surface of the first substrate far away from the second substrate.

In one embodiment, the method further comprises a plurality of second cushion layers and a plurality of third cushion layers; each second cushion layer corresponds to the first transistor one by one, and each third cushion layer corresponds to the second transistor one by one;

the fourth substrate is arranged at intervals with the first substrate through a second cushion layer; the first substrate is arranged at intervals with the second substrate through a third cushion layer;

the closed space on the first side of the second cushion layer is used for filling third liquid crystal molecules, and the closed space on the second side of the second cushion layer is used for filling normally white liquid crystal molecules; the closed space on the first side of the third cushion layer is used for filling normally white mode liquid crystal molecules, and the closed space on the second side of the third cushion layer is used for filling fourth liquid crystal molecules;

the third liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixels corresponding to the first transistors, and the fourth liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixels corresponding to the second transistors.

In one embodiment, the display device further comprises a third pixel electrode and a fourth pixel electrode; the first transistor is connected with the third pixel electrode, and the second transistor is connected with the fourth pixel electrode;

the third pixel electrode is arranged on the outer surface of the first substrate on the first side of the second cushion layer;

the fourth pixel electrode is arranged on the inner surface of the second substrate on the second side of the third cushion layer.

In one embodiment, the device further comprises a third common electrode and a fourth common electrode; the first transistor is connected with the third common electrode, and the second transistor is connected with the fourth common electrode;

the third common electrode is arranged on the inner surface of the fourth substrate;

the fourth common electrode is arranged on the inner surface of the first substrate.

Drawings

FIG. 1 is a schematic view of a liquid crystal display panel;

FIG. 2 is a schematic cross-sectional view of an LCD panel according to an embodiment;

FIG. 3 is a schematic cross-sectional view of a liquid crystal display panel according to another embodiment.

Detailed Description

For better understanding of the objects, technical solutions and effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples. It is to be noted that the following examples are given for the purpose of illustration only and are not intended to limit the invention

Fig. 1 is a schematic structural diagram of a liquid crystal display panel, as shown in fig. 1, the liquid crystal display panel includes a first substrate 100, a second substrate 101, and a plurality of transistors; wherein, each transistor corresponds to each sub-pixel in the liquid crystal display panel one by one;

in general, a liquid crystal display panel includes a plurality of sequentially arranged sub-pixels, and each sub-pixel corresponds to a part of liquid crystal molecules. The transistors are used for driving liquid crystal molecules corresponding to the sub-pixels, controlling the liquid crystal molecules to deflect so as to change the light penetration rate and realize different color levels.

The first substrate 100 and the second substrate 101 are disposed at an interval;

the first substrate 100 and the second substrate 101 are disposed at an interval, one surface of the first substrate 100 close to the second substrate 101 is an inner surface of the first substrate 100, and one surface of the first substrate 100 far from the second substrate 101 is an outer surface of the first substrate 100. Similarly, one surface of the second substrate 101 close to the first substrate 100 is an inner surface of the second substrate 101, and one surface far from the first substrate 100 is an outer surface of the second substrate 101.

Based on the spaced arrangement of the first substrate 100 and the second substrate 101, a space for filling liquid crystal molecules may be formed between the inner surface of the first substrate 100 and the inner surface of the second substrate 101.

The first transistors 102 and the second transistors 103 are arranged at intervals, the first transistors 102 are arranged on the surface of the first substrate 100, and the second transistors 103 are arranged on the surface of the second substrate 101; two transistors corresponding to each two adjacent sub-pixels are the first transistor 102 and the second transistor 103, respectively.

In fig. 1, the first transistor 102 is disposed on an inner surface of the first substrate 100, and the second transistor 103 is disposed on an inner surface of the second substrate 101. As shown in fig. 1, when parallel light in a backlight of the liquid crystal display panel penetrates through the first substrate 100 and the second substrate 101, the first transistor 102 and the second transistor 103 are correspondingly spaced, so that the projection of the parallel light formed by the second transistor 103 coincides with the first transistor 102. Therefore, when parallel light passes through every two adjacent sub-pixels, the light shielding area caused by the transistors in the two sub-pixels is equivalent to the area of one transistor.

The first transistor 102 is used for driving the liquid crystal molecules of the corresponding sub-pixel to deflect, and the second transistor 103 is used for driving the liquid crystal molecules of the corresponding sub-pixel to deflect. The sub-pixel driven by the first transistor 102 and the sub-pixel driven by the second transistor 103 are adjacent sub-pixels. Wherein, every two sub-pixels form a pair, the corresponding transistors comprise a first transistor 102 and a second transistor 103, and the transistors of the sub-pixels after the pair are not paired with other sub-pixels.

In one embodiment, the first substrate 100 and the second substrate 101 each include a glass substrate, and the first transistor 102 and the second transistor 103 are TFT transistors formed on the glass substrate.

In one embodiment, fig. 2 is a cross-sectional view of an lcd panel according to an embodiment, as shown in fig. 2, a first transistor 102 is disposed on an inner surface of a first substrate 100, and a second transistor 103 is disposed on an inner surface of a second substrate 101.

When the first transistor 102 is disposed on the inner surface of the first substrate 100 and the second transistor 103 is disposed on the inner surface of the second substrate 101, both the first transistor 102 and the second transistor 103 can be used to drive liquid crystal molecules between the inner surface of the first substrate 100 and the inner surface of the second substrate 101.

In one embodiment, as shown in fig. 2, the lcd panel further includes a plurality of first pad layers 200, and each of the first pad layers 200 corresponds to one of the first transistors 102; the first transistor 102 and the second transistor 103 are arranged at intervals through a first pad layer 200;

the first side of the first spacer 200 is a closed SPACE1 for filling the first liquid crystal molecules, and the second side of the first spacer 200 is a closed SPACE2 for filling the second liquid crystal molecules; the first liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixels corresponding to the first transistors, and the second liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixels corresponding to the second transistors.

As shown in fig. 2, the buffer portion between the sub-pixels is a black matrix. Wherein, each first pad layer 200 is disposed in one-to-one correspondence with the black matrix.

The first pad layer 200, the first substrate 100 and the second substrate 101 cooperate to form two enclosed SPACEs, as shown in fig. 2, including an enclosed SPACE1 and an enclosed SPACE 2. The first liquid crystal molecules filled in the closed SPACE1 correspond to one sub-pixel in every two adjacent sub-pixels, the light penetration rate can be changed by the deflection of the first liquid crystal molecules, and different color levels are realized on the corresponding sub-pixels. Similarly, the second liquid crystal molecules filled in the SPACE2 correspond to another sub-pixel in every two adjacent sub-pixels, and the deflection of the second liquid crystal molecules can change the light transmittance, so as to realize different color levels on the corresponding sub-pixels.

In one embodiment, as shown in fig. 2, the liquid crystal display panel further includes a first pixel electrode 201 and a second pixel electrode 202; the first transistor 102 is connected to the first pixel electrode 201, and the second transistor 103 is connected to the second pixel electrode 202;

the first pixel electrode 201 is disposed on the inner surface of the first substrate 100 on the first side of the first pad layer 200;

the first pixel electrode 201 is disposed on the inner surface of the first substrate 100 on the first side of the first pad layer 200, that is, the first pixel electrode 201 is disposed on the upper surface of the SPACE1, and can be used to control the deflection of the first liquid crystal molecules. Specifically, the first pixel electrode 201 is connected to the first transistor 102, and the first liquid crystal molecules are controlled to be deflected by switching control of the first transistor 102.

The second pixel electrode 202 is disposed on the inner surface of the second substrate 100 on the second side of the first pad layer 200.

The second pixel electrode 202 is disposed on the inner surface of the second substrate 100 on the second side of the first pad layer 200, that is, the second pixel electrode 202 is disposed on the lower surface of the SPACE2, and can be used to control the deflection of the second liquid crystal molecules. Specifically, the second pixel electrode 202 is connected to the second transistor 103, and the second liquid crystal molecules are controlled to be deflected according to switching control of the second transistor 103.

The first pixel electrode 201 changes the transmittance of the first liquid crystal molecules, and the second pixel electrode 202 changes the transmittance of the second liquid crystal molecules, so that the aperture ratio of the liquid crystal display panel is further increased when the transmittance of the first liquid crystal molecules and the transmittance of the second liquid crystal molecules are increased.

In one embodiment, as shown in fig. 2, the liquid crystal display panel further includes a first common electrode 203 and a second common electrode 204;

the first common electrode 203 is arranged on the inner surface of the second substrate 101 on the first side of the first pad layer 200;

the first common electrode 203 is disposed on the inner surface of the second substrate 101 on the second side of the first pad layer 200, that is, the first common electrode 203 is disposed on the lower surface of the SPACE 1.

The second common electrode 204 is disposed on the inner surface of the first substrate 100 on the second side of the first pad layer 200.

The second common electrode 204 is disposed on the inner surface of the first substrate 100 on the second side of the first pad layer 200, that is, the second common electrode 204 is disposed on the upper surface of the SPACE 2.

In one embodiment, as shown in fig. 2, the liquid crystal display panel further includes a first color filter 205 and a third substrate 206;

the third substrate 206 is spaced apart from the outer surface of the first substrate 100 by the first color filter 205; the first color filter 205 is disposed corresponding to each sub-pixel.

As shown in fig. 2, the first color filter 205 shown in fig. 2 includes two sub-pixels, which are a green sub-pixel G-Photo and a red sub-pixel R-Photo, respectively, where the green sub-pixel G-Photo corresponds to the first liquid crystal molecules of the SPACE1, and the red sub-pixel R-Photo corresponds to the second liquid crystal molecules of the SPACE 2. Similarly, the other sub-pixels on the first color filter 205 correspond to the liquid crystal molecules in every two adjacent closed spaces like the green sub-pixel G-Photo and the red sub-pixel R-Photo.

The third substrate 206 is spaced apart from the outer surface of the first substrate 100 by the first color filter 205, and parallel light of the backlight source of the liquid crystal display panel sequentially passes through the second substrate 101, the first substrate 100, and the third substrate 206. The first substrate 100 and the third substrate 206 are used to provide protection for the first color filter 205.

In one embodiment, fig. 3 is a schematic cross-sectional view of a liquid crystal display panel according to another embodiment, as shown in fig. 3, the liquid crystal display panel further includes a fourth substrate 300;

the outer surface of the first substrate 100 is spaced apart from the fourth substrate 300;

the first transistor 102 is disposed on an outer surface of the first substrate 100, and the second transistor 103 is disposed on an inner surface of the second substrate 101. The outer surface of the first substrate 100 is a surface of the first substrate 100 away from the second substrate 101.

The first substrate 100 and the fourth substrate 300 are disposed at an interval, the formed enclosed space can be used for filling liquid crystal molecules, the first transistor 102 is disposed on the outer surface of the first substrate 100, that is, the first transistor 12 is disposed on the lower surface of the enclosed space formed by the first substrate 100 and the fourth substrate 300, and the first transistor 102 can control the liquid crystal molecules in the enclosed space. Meanwhile, the first substrate 100 and the second substrate 101 are disposed at an interval to form a sealed space for filling another part of the liquid crystal molecules, that is, the second transistor 103 is disposed on the lower surface of the sealed space, and the part of the liquid crystal molecules in the sealed space is controlled by the second transistor 103.

In one embodiment, as shown in fig. 3, the liquid crystal display panel further includes a plurality of second pad layers 301 and a plurality of third pad layers 302; wherein, each second pad 301 corresponds to the first transistor 102 one by one, and each third pad 302 corresponds to the second transistor 103 one by one;

the fourth substrate 300 is spaced apart from the first substrate 101 by a second pad layer 301; the first substrate 100 is arranged at an interval with the second substrate 101 through the third pad layer 302;

as shown in fig. 3, the buffer portion between the sub-pixels is a black matrix. Wherein, each first pad layer 200 is disposed in one-to-one correspondence with the black matrix.

The closed SPACE3 on the first side of the second underlayer 301 is used for filling the third liquid crystal molecules, and the closed SPACE4 on the second side of the second underlayer is used for filling the liquid crystal molecules in the normally white mode; the closed SPACE5 on the first side of the third underlayer 302 is used for filling the liquid crystal molecules in the normally white mode, and the closed SPACE6 on the second side of the third underlayer 302 is used for filling the fourth liquid crystal molecules;

among them, the transmittance of the liquid crystal molecules in the normally white mode is 100%.

The third liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixel corresponding to the first transistor 102, and the fourth liquid crystal molecules are liquid crystal molecules corresponding to the sub-pixel corresponding to the second transistor 103.

The second pad layer 301, the first substrate 100 and the fourth substrate 300 cooperate to form two enclosed SPACEs, as shown in fig. 3, including an enclosed SPACE3 and an enclosed SPACE 4. The third liquid crystal molecules filled in the closed SPACE3 correspond to one sub-pixel in every two adjacent sub-pixels, the light penetration rate can be changed by the deflection of the third liquid crystal molecules, and different color levels are realized on the corresponding sub-pixels. Meanwhile, the liquid crystal molecules in the normally white mode filled in the closed SPACE4 correspond to another sub-pixel in every two adjacent sub-pixels, and the transmittance of the liquid crystal molecules in the normally white mode is 100%, that is, the liquid crystal molecules in the closed SPACE4 do not reduce the aperture ratio.

Similarly, the third pad layer 302, the first substrate 100 and the second substrate 101 cooperate to form two enclosed SPACEs, as shown in fig. 3, including an enclosed SPACE5 and an enclosed SPACE 6. The fourth liquid crystal molecules filled in the closed SPACE6 correspond to one sub-pixel in every two adjacent sub-pixels, the light penetration rate can be changed by the deflection of the fourth liquid crystal molecules, and different color levels are realized on the corresponding sub-pixels. Meanwhile, the liquid crystal molecules in the normally white mode filled in the closed SPACE5 correspond to another sub-pixel in every two adjacent sub-pixels, and the transmittance of the liquid crystal molecules in the normally white mode is 100%, that is, the liquid crystal molecules in the closed SPACE5 do not reduce the aperture ratio.

In one embodiment, as shown in fig. 3, the liquid crystal display panel further includes a third pixel electrode 303 and a fourth pixel electrode 304; the first transistor 102 is connected to the third pixel electrode 303, and the second transistor 103 is connected to the fourth pixel electrode 304;

the third pixel electrode 303 is disposed on the outer surface of the first substrate 100 on the first side of the second pad layer 301;

the third pixel electrode 303 is disposed on the outer surface of the first substrate 100 on the first side of the second pad layer 301, that is, on the lower surface of the SPACE3 to control the deflection of the third liquid crystal molecules. Specifically, the third pixel electrode 303 is connected to the first transistor 102, and controls the deflection of the third liquid crystal molecules in accordance with the switching control of the first transistor 102.

The fourth pixel electrode 304 is disposed on the inner surface of the second substrate 101 on the second side of the third pad layer 302.

The fourth pixel electrode 304 is disposed on the inner surface of the second substrate 101 on the second side of the third pad layer 302, i.e., on the lower surface of the SPACE6, so as to control the deflection of the fourth liquid crystal molecules. Specifically, the fourth pixel electrode 304 is connected to the second transistor 103, and the fourth liquid crystal molecules are controlled to be deflected by switching control of the second transistor 103.

In one embodiment, as shown in fig. 3, a third common electrode 305 and a fourth common electrode 306 are further included;

the third common electrode 305 is disposed on the inner surface of the fourth substrate 300;

the fourth common electrode 306 is disposed on the inner surface of the first substrate 100.

In one embodiment, as shown in fig. 3, a second color filter 307 is further included;

the fourth substrate 300 is spaced apart from the first substrate 100 by a second color filter 307.

As shown in fig. 3, the second color filter 307 shown in fig. 3 includes two sub-pixels, which are a green sub-pixel G-Photo and a red sub-pixel R-Photo, respectively, where the green sub-pixel G-Photo corresponds to the third liquid crystal molecule of the SPACE3, and the red sub-pixel R-Photo corresponds to the fourth liquid crystal molecule of the SPACE 6. Similarly, the other sub-pixels on the second color filter 307 correspond to liquid crystal molecules in every two adjacent closed spaces like the green sub-pixel G-Photo and the red sub-pixel R-Photo.

The fourth substrate 300 is spaced apart from the first substrate 100 by a second color filter 307, and parallel light of a backlight of the liquid crystal display panel sequentially passes through the second substrate 101, the first substrate 100, and the fourth substrate 300.

In the liquid crystal display panel, the first transistors 102 are disposed on the surface of the first substrate 100 disposed at intervals, and the second transistors 103 are disposed on the surface of the second substrate 101 disposed at intervals, so that the first transistors 102 and the second transistors 103 are disposed at intervals. Since the two transistors corresponding to each two adjacent sub-pixels are the first transistor 102 and the second transistor 103, when the light of the backlight of the liquid crystal display panel passes through each two adjacent sub-pixels, the light is only affected by the size and area of one transistor. Compared with the traditional liquid crystal display panel, the influence of the size area of one transistor on the aperture ratio is reduced. Therefore, the aperture opening ratio of the liquid crystal display panel is improved on the premise of not influencing the resolution ratio of the liquid crystal display panel.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A liquid crystal display panel is characterized by comprising a first substrate, a second substrate, a fourth substrate and a plurality of transistors; the two transistors corresponding to every two adjacent sub-pixels are respectively a first transistor and a second transistor;

the first substrate and the second substrate are arranged at intervals;

the first transistors and the second transistors are correspondingly arranged at intervals, the first transistors are arranged on the outer surface of the first substrate, and the second transistors are arranged on the inner surface of the second substrate;

the outer surface of the first substrate and the fourth substrate are arranged at intervals; wherein the first substrate outer surface is a surface of the first substrate remote from the second substrate;

the liquid crystal display panel also comprises a plurality of second cushion layers and a plurality of third cushion layers; each second pad layer corresponds to the first transistor, and each third pad layer corresponds to the second transistor;

the fourth substrate is arranged at an interval with the first substrate through the second cushion layer; the first substrate and the second substrate are arranged at intervals through the third cushion layer;

2. The liquid crystal display panel according to claim 1, further comprising a third pixel electrode and a fourth pixel electrode; wherein the first transistor is connected to the third pixel electrode, and the second transistor is connected to the fourth pixel electrode;

the fourth pixel electrode is disposed on the inner surface of the second substrate on the second side of the third pad layer.

3. The liquid crystal display panel according to claim 1, further comprising a third common electrode and a fourth common electrode;

4. The liquid crystal display panel according to claim 1, wherein the first substrate and the second substrate each include a glass substrate, and wherein the first transistor and the second transistor are TFT transistors formed over the glass substrate.

5. The liquid crystal display panel according to claim 1, further comprising: a second color filter;

the fourth substrate is arranged at an interval with the first substrate through the second color filter and the second cushion layer.