CN220105483U - Display panel and display device - Google Patents

Abstract

A display panel and display device, the display panel includes the first liquid crystal box, second liquid crystal box and third liquid crystal box, the display panel has red sub-pixel, green sub-pixel and blue sub-pixel; the first liquid crystal box is provided with a red dye liquid crystal layer in a region corresponding to the red sub-pixel, the second liquid crystal box is provided with a green dye liquid crystal layer in a region corresponding to the green sub-pixel, the third liquid crystal box is provided with a blue dye liquid crystal layer in a region corresponding to the blue sub-pixel, and the alignment directions of the two sides of the dye liquid crystal layers are mutually perpendicular, and the dye liquid crystal has the characteristics of strong light absorption capacity in the long axis direction and weak light absorption capacity in the short axis direction, so that the display panel does not need to use an upper polarizer and a lower polarizer, thereby improving the utilization rate of backlight and saving power consumption; in addition, the red dye liquid crystal layer, the green dye liquid crystal layer and the blue dye liquid crystal layer can change the color of transmitted light and play a role of filtering, so that the display panel does not need to be provided with a color resistance material.

Description

Display panel and display device

Technical Field

The present utility model relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

With the development of display technology, light and thin display panels are popular with consumers, especially light and thin display panels (liquid crystal display, LCD). The conventional display panel includes a thin film transistor array Substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), a color film Substrate (Color Filter Substrate, CF Substrate) and liquid crystal molecules filled between the thin film transistor array Substrate and the color film Substrate, and when the display panel works, a driving voltage is applied to the thin film transistor array Substrate and the color film Substrate respectively, so as to control the rotation direction of the liquid crystal molecules between the two substrates, and refract the backlight provided by the backlight module, thereby displaying a picture.

However, in the conventional display panel, a lower polarizer and an upper polarizer are disposed on the array substrate and the color film substrate, respectively, and light transmission axes of the lower polarizer and the upper polarizer are perpendicular to each other. However, the utilization ratio of the lower polarizer to the backlight is less than 50%, and the upper polarizer absorbs a part of light, so that the utilization ratio of the traditional display panel to the backlight is greatly reduced, the transmittance of the light is low, the contrast ratio of the display panel is reduced, and the requirement of a user on the picture display quality of the display panel cannot be met. Moreover, the cost is relatively high by adopting a plurality of polaroids. In addition, a color resistance layer is also needed on the color film substrate to realize the filtration of backlight color, which further results in greatly reduced utilization rate of backlight by the traditional display panel.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a display panel and a display device, so as to solve the problems of low utilization rate of backlight and low contrast ratio of the display panel in the prior art.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a display panel, which comprises a first liquid crystal box, a second liquid crystal box and a third liquid crystal box which are mutually overlapped;

the first liquid crystal box is provided with a plurality of red sub-pixels and a first transparent baffle area for spacing the red sub-pixels, the first liquid crystal box comprises a first substrate and a second substrate which is opposite to the first substrate, a first accommodating cavity which is in one-to-one correspondence with the red sub-pixels is arranged between the first substrate and the second substrate, a red dye liquid crystal layer is arranged in the first accommodating cavity, the red dye liquid crystal layer is aligned parallel to the first substrate and the second substrate, the alignment direction of the red dye liquid crystal layer close to one side of the first substrate is mutually perpendicular to the alignment direction of one side of the second substrate, a first pixel electrode which is in one-to-one correspondence with the red sub-pixels is arranged on the second substrate, and a first common electrode which is matched with the first pixel electrode is arranged on the first substrate;

the second liquid crystal box is provided with a plurality of green sub-pixels and a second transparent barrier area for spacing the plurality of green sub-pixels, the second liquid crystal box comprises a third substrate and a fourth substrate which is opposite to the third substrate, a second accommodating cavity which is in one-to-one correspondence with the green sub-pixels is arranged between the third substrate and the fourth substrate, a green dye liquid crystal layer is arranged in the second accommodating cavity, the green dye liquid crystal layer is aligned parallel to the third substrate and the fourth substrate, the alignment direction of the green dye liquid crystal layer on one side close to the third substrate is mutually perpendicular to the alignment direction on one side close to the fourth substrate, a second pixel electrode which is in one-to-one correspondence with the green sub-pixels is arranged on the fourth substrate, and a second common electrode which is matched with the second pixel electrode is arranged on the third substrate;

the third liquid crystal box is provided with a plurality of blue sub-pixels and a third transparent barrier area for spacing the plurality of blue sub-pixels, the third liquid crystal box comprises a fifth substrate and a sixth substrate which is opposite to the fifth substrate, a third accommodating cavity which is in one-to-one correspondence with the blue sub-pixels is arranged between the fifth substrate and the sixth substrate, a blue dye liquid crystal layer is arranged in the third accommodating cavity, the blue dye liquid crystal layer is aligned parallel to the fifth substrate and the sixth substrate, the alignment direction of the blue dye liquid crystal layer on one side close to the fifth substrate is mutually perpendicular to the alignment direction on one side close to the sixth substrate, a third pixel electrode which is in one-to-one correspondence with the blue sub-pixels is arranged on the sixth substrate, and a third common electrode which is matched with the third pixel electrode is arranged on the fifth substrate;

in the projection direction of the display panel, the red sub-pixel, the green sub-pixel and the blue sub-pixel are staggered, the first transparent barrier region corresponds to the green sub-pixel and the blue sub-pixel, the second transparent barrier region corresponds to the red sub-pixel and the blue sub-pixel, and the third transparent barrier region corresponds to the green sub-pixel and the blue sub-pixel.

Further, a first baffle wall corresponding to the first transparent baffle area is arranged between the first substrate and the second substrate, and the first baffle wall divides a gap between the first substrate and the second substrate into a plurality of first accommodating cavities;

a second baffle wall corresponding to the second transparent baffle area is arranged between the third substrate and the fourth substrate, and the second baffle wall divides the gap between the third substrate and the fourth substrate into a plurality of second accommodating cavities;

a third baffle wall corresponding to the third transparent baffle area is arranged between the fifth substrate and the sixth substrate, and the third baffle wall divides the gap between the fifth substrate and the sixth substrate into a plurality of third accommodating cavities.

Further, the first barrier wall is arranged on the first substrate and faces the second substrate; or the first baffle wall is arranged on the second substrate and faces the first substrate.

Further, the second barrier wall is arranged on the third substrate and faces the fourth substrate; or the second baffle wall is arranged on the fourth substrate and faces the third substrate.

Further, the third baffle wall is arranged on the fifth substrate and faces the sixth substrate; or the third baffle wall is arranged on the sixth substrate and faces the fifth substrate.

Further, a plurality of first scan lines, a plurality of first data lines and a plurality of first thin film transistors are arranged on the second substrate, the first pixel electrode and the first thin film transistor are arranged in the region corresponding to each red sub-pixel, and the first pixel electrode is electrically connected with the first scan lines and the first data lines adjacent to the first thin film transistor through the first thin film transistor;

the fourth substrate is provided with a plurality of second scanning lines, a plurality of second data lines and a plurality of second thin film transistors, the fourth substrate is provided with the second pixel electrode and the second thin film transistors in the corresponding area of each green sub-pixel, and the second pixel electrode is electrically connected with the second scanning lines and the second data lines adjacent to the second thin film transistors through the second thin film transistors;

the sixth substrate is provided with a plurality of third scanning lines, a plurality of third data lines and a plurality of third thin film transistors, the third pixel electrode and the third thin film transistors are arranged in the region corresponding to each blue sub-pixel, and the third pixel electrode is electrically connected with the third scanning lines and the third data lines adjacent to the third thin film transistors through the third thin film transistors.

Further, at least one of the first substrate, the third substrate and the fifth substrate is provided with a black matrix, and the black matrix separates projection areas of the red sub-pixels, the green sub-pixels and the blue sub-pixels on the substrate where the black matrix is located from each other.

Further, the first liquid crystal cell, the second liquid crystal cell and the third liquid crystal cell are stacked in sequence from top to bottom.

The utility model also provides a display device comprising the display panel.

Further, the display device further comprises a backlight module, and the backlight module is arranged on the light incident side of the display panel and is used for providing a backlight source for the display panel.

The utility model has the beneficial effects that: the utility model has the advantages that the red dye liquid crystal layer is arranged in the area corresponding to the red sub-pixel, the green dye liquid crystal layer is arranged in the area corresponding to the green sub-pixel, the blue dye liquid crystal layer is arranged in the area corresponding to the blue sub-pixel, the alignment directions of the two sides of the dye liquid crystal layer are mutually vertical, and the dye liquid crystal has the characteristic of strong light absorption capacity in the long axis direction and weak light absorption capacity in the short axis direction, so that the display panel does not need to use an upper polarizer and a lower polarizer, the gray scale brightness can be controlled, the backlight utilization rate can be improved, the power consumption is more reduced, the contrast ratio can be improved, and compared with the brightness requirement of the same design, the utility model can be replaced by a lower-cost lower-power-consumption lower-consumption backlight module due to the extremely improved backlight utilization rate; in addition, the red dye liquid crystal layer, the green dye liquid crystal layer and the blue dye liquid crystal layer can change the color of transmitted light and play a role of filtering, so that the display panel does not need to be provided with a color resistance material, and the utilization rate of backlight is further improved.

Drawings

Fig. 1 is a schematic diagram of a display device in an initial state according to a first embodiment of the present utility model.

Fig. 2 is a schematic plan view of a display device according to a first embodiment of the utility model.

Fig. 3 is a schematic plan view of a second substrate according to a first embodiment of the utility model.

Fig. 4 is a schematic plan view of a fourth substrate according to an embodiment of the utility model.

Fig. 5 is a schematic plan view of a sixth substrate according to a first embodiment of the present utility model.

Fig. 6 is a schematic view of a display device in a bright state according to the first embodiment of the utility model.

Fig. 7 is a schematic structural diagram of a display device in an initial state according to a second embodiment of the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted by the utility model to achieve the preset aim, the following detailed description is given of the specific implementation, structure, characteristics and effects of the display panel and the display device according to the utility model by combining the accompanying drawings and the preferred embodiment, wherein:

example one

Fig. 1 is a schematic diagram of a display device in an initial state according to a first embodiment of the present utility model. Fig. 2 is a schematic plan view of a display device according to a first embodiment of the utility model. Fig. 3 is a schematic plan view of a second substrate according to a first embodiment of the utility model. Fig. 4 is a schematic plan view of a fourth substrate according to an embodiment of the utility model. Fig. 5 is a schematic plan view of a sixth substrate according to a first embodiment of the present utility model. Fig. 6 is a schematic view of a display device in a bright state according to the first embodiment of the utility model.

As shown in fig. 1 to 6, a display panel according to a first embodiment of the present utility model includes a first liquid crystal cell 10, a second liquid crystal cell 20, and a third liquid crystal cell 30 stacked on each other. In this embodiment, the first liquid crystal cell 10, the second liquid crystal cell 20 and the third liquid crystal cell 30 are stacked in order from top to bottom, that is, the second liquid crystal cell 20 is located at the light emitting side of the third liquid crystal cell 30, and the first liquid crystal cell 10 is located at the light emitting side of the second liquid crystal cell 20. Of course, the positions of the first liquid crystal cell 10, the second liquid crystal cell 20 and the third liquid crystal cell 30 can be arbitrarily adjusted according to actual needs. The first liquid crystal cell 10, the second liquid crystal cell 20 and the third liquid crystal cell 30 can be mutually bonded together through OCA glue. Of course, the first liquid crystal cell 10, the second liquid crystal cell 20 and the third liquid crystal cell 30 may be bonded together by other transparent glue materials or glue materials with the same function.

As shown in fig. 2, the first liquid crystal cell 10 has a plurality of red sub-pixels P1 and a first transparent barrier region that separates the plurality of red sub-pixels P1, the second liquid crystal cell 20 has a plurality of green sub-pixels P2 and a second transparent barrier region that separates the plurality of green sub-pixels P2, and the third liquid crystal cell 30 has a plurality of blue sub-pixels P3 and a third transparent barrier region that separates the plurality of blue sub-pixels P3. In the projection direction of the display panel, the red sub-pixel P1, the green sub-pixel P2 and the blue sub-pixel P3 are offset from each other, the first transparent barrier region corresponds to the green sub-pixel P2 and the blue sub-pixel P3, the second transparent barrier region corresponds to the red sub-pixel P1 and the blue sub-pixel P3, and the third transparent barrier region corresponds to the green sub-pixel P2 and the blue sub-pixel P3.

As shown in fig. 1, the first liquid crystal cell 10 includes a first substrate 11 and a second substrate 12 disposed opposite to the first substrate 11, and a first accommodation chamber corresponding to the red sub-pixel P1 one by one is provided between the first substrate 11 and the second substrate 12. The first accommodation cavity is internally provided with the red dye liquid crystal layer 13, the red dye liquid crystal layer 13 comprises first liquid crystal molecules 131 and red dye molecules 132, wherein the first liquid crystal molecules 131 are positive liquid crystal molecules, the light absorption capacity of the long axis of the red dye molecules 132 is larger than that of the short axis, namely, the red dye molecules 132 have the characteristics that the long axis is strong in light absorption capacity, the short axis is weak in light absorption capacity, the red dye molecules 132 can change the color of transmitted light to play a role in filtering light, and only red light can pass through the red dye molecules 132 when white backlight is emitted to the red dye molecules 132. In the initial state, the first liquid crystal molecules 131 and the red dye molecules 132 are in a lying posture, the first liquid crystal molecules 131 and the red dye molecules 132 in the red dye liquid crystal layer 13 are aligned parallel to the first substrate 11 and the second substrate 12, and the alignment direction of the red dye liquid crystal layer 13 near the first substrate 11 is perpendicular to the alignment direction near the second substrate 12, so as to form a TN display mode. It is understood that the side of the first substrate 11 facing the red dye liquid crystal layer 13 is provided with a first alignment layer, the side of the second substrate 12 facing the red dye liquid crystal layer 13 is provided with a second alignment layer, and the first alignment layer and the second alignment layer are used for aligning the red dye liquid crystal layer 13, and the alignment directions of the first alignment layer and the second alignment layer are perpendicular to each other.

As shown in fig. 3, the second substrate 12 is an array substrate. The second substrate 12 is provided with a plurality of first scan lines 101, a plurality of first data lines 102 and a plurality of first thin film transistors 103, the second substrate 12 is provided with first pixel electrodes 121 and first thin film transistors 103 in the area corresponding to each red sub-pixel P1, the second substrate 12 is provided with first pixel electrodes 121 corresponding to the red sub-pixels P1 one by one, and the second substrate 12 has no first pixel electrodes 121 in the area corresponding to the green sub-pixels P2 and the blue sub-pixels P3. The first pixel electrode 121 is electrically connected to the first scan line 101 and the first data line 102 adjacent to the first thin film transistor 103 through the first thin film transistor 103. The first substrate 11 is provided with a first common electrode 111 which is matched with the first pixel electrode 121, and the first common electrode 111 is a planar electrode which entirely covers the first substrate 11. The first thin film transistor 103 includes a first gate electrode, a first active layer, a first drain electrode, and a first source electrode, where the first gate electrode and the first scan line 101 are located on the same layer and electrically connected, the first gate electrode and the first active layer are isolated by an insulating layer, the first source electrode is electrically connected to the first data line 102, and the first drain electrode and the first pixel electrode 121 are electrically connected by a contact hole.

In this embodiment, a first barrier wall 14 corresponding to the first transparent barrier region is provided between the first substrate 11 and the second substrate 12, and the first barrier wall 14 separates the gap between the first substrate 11 and the second substrate 12 into a plurality of first accommodating chambers. The first barrier wall 14 is of a transparent structure and covers the areas corresponding to the green sub-pixel P2 and the blue sub-pixel P3, that is, the areas corresponding to the green sub-pixel P2 and the blue sub-pixel P3 between the first substrate 11 and the second substrate 12 are filled with the first barrier wall 14, so that the first barrier wall 14 can well support the first substrate 11 and the second substrate 12, and therefore, no additional support column (PS) is required to be arranged in the first liquid crystal cell 10. The first barrier wall 14 may be made of OC material.

In this embodiment, the first barrier wall 14 is disposed on the second substrate 12 and faces the first substrate 11, the first barrier wall 14 is fixed to the second substrate 12, and after the first substrate 11 and the second substrate 12 are subjected to the box forming process, one end of the first barrier wall 14 away from the second substrate 12 is abutted against the first substrate 11.

As shown in fig. 1, the second liquid crystal cell 20 includes a third substrate 21 and a fourth substrate 22 disposed opposite to the third substrate 21, and second accommodating chambers in one-to-one correspondence with the green sub-pixels P2 are provided between the third substrate 21 and the fourth substrate 22. The second accommodation cavity is internally provided with a green dye liquid crystal layer 23, the green dye liquid crystal layer 23 comprises a second liquid crystal molecule 231 and a green dye molecule 232, wherein the second liquid crystal molecule 231 is a positive liquid crystal molecule, the light absorption capacity of the long axis of the green dye molecule 232 is larger than that of the short axis, namely, the green dye molecule 232 has the characteristics that the light absorption capacity of the long axis is strong, the light absorption capacity of the short axis is weak, the green dye molecule 232 can change the color of transmitted light, the filtering effect is achieved, and when white backlight emits to the green dye molecule 232, only green light can pass through the green dye molecule 232. In the initial state, the second liquid crystal molecules 231 and the green dye molecules 232 are in a lying posture, the second liquid crystal molecules 231 and the green dye molecules 232 in the green dye liquid crystal layer 23 are aligned parallel to the third substrate 21 and the fourth substrate 22, and the alignment direction of the green dye liquid crystal layer 23 near the third substrate 21 is perpendicular to the alignment direction of the green dye liquid crystal layer 23 near the fourth substrate 22, so as to form a TN display mode. It is understood that the side of the third substrate 21 facing the green dye liquid crystal layer 23 is provided with a third alignment layer, the side of the fourth substrate 22 facing the green dye liquid crystal layer 23 is provided with a fourth alignment layer, the third alignment layer and the fourth alignment layer are used for aligning the green dye liquid crystal layer 23, and the alignment directions of the third alignment layer and the fourth alignment layer are perpendicular to each other.

As shown in fig. 4, the fourth substrate 22 is an array substrate. The fourth substrate 22 is provided with a plurality of second scan lines 201, a plurality of second data lines 202 and a plurality of second thin film transistors 203, the fourth substrate 22 is provided with second pixel electrodes 221 and second thin film transistors 203 in the area corresponding to each green sub-pixel P2, the fourth substrate 22 is provided with second pixel electrodes 221 corresponding to the green sub-pixels P2 one by one, and the fourth substrate 22 has no second pixel electrodes 221 in the area corresponding to the red sub-pixels P1 and the blue sub-pixels P3. The second pixel electrode 221 is electrically connected to the second scan line 201 and the second data line 202 adjacent to the second thin film transistor 203 through the second thin film transistor 203. The third substrate 21 is provided with a second common electrode 211 which is matched with the second pixel electrode 221, and the second common electrode 211 is a planar electrode which covers the entire surface of the third substrate 21. The second thin film transistor 203 includes a second gate electrode, a second active layer, a second drain electrode, and a second source electrode, where the second gate electrode is located on the same layer as the second scan line 201 and is electrically connected to the second scan line, the second gate electrode is isolated from the second active layer by an insulating layer, the second source electrode is electrically connected to the second data line 202, and the second drain electrode is electrically connected to the second pixel electrode 221 by a contact hole.

In the present embodiment, a second barrier wall 24 corresponding to the second transparent barrier region is provided between the third substrate 21 and the fourth substrate 22, and the second barrier wall 24 partitions the gap between the third substrate 21 and the fourth substrate 22 into a plurality of second accommodating chambers. The second barrier wall 24 is a transparent structure and covers the area corresponding to the red sub-pixel P1 and the blue sub-pixel P3, that is, the area corresponding to the red sub-pixel P1 and the blue sub-pixel P3 between the third substrate 21 and the fourth substrate 22 is filled with the second barrier wall 24, so that the second barrier wall 24 can well support the area between the third substrate 21 and the fourth substrate 22, and therefore, no additional support column (PS) is required to be arranged in the second liquid crystal cell 20. Wherein the second barrier wall 24 may be of OC material.

In this embodiment, the second barrier wall 24 is disposed on the fourth substrate 22 and faces the third substrate 21, the second barrier wall 24 is fixed to the fourth substrate 22, and after the third substrate 21 and the fourth substrate 22 perform the box forming process, one end of the second barrier wall 24 away from the fourth substrate 22 is abutted against the third substrate 21.

As shown in fig. 1, the third liquid crystal cell 30 includes a fifth substrate 31 and a sixth substrate 32 disposed opposite to the fifth substrate 31, and a third accommodating cavity in one-to-one correspondence with the blue sub-pixel P3 is provided between the fifth substrate 31 and the sixth substrate 32. The third accommodation cavity is internally provided with a blue dye liquid crystal layer 33, the blue dye liquid crystal layer 33 comprises a third liquid crystal molecule 331 and a blue dye molecule 332, wherein the third liquid crystal molecule 331 is a positive liquid crystal molecule, the light absorption capacity of the long axis of the blue dye molecule 332 is larger than that of the short axis, namely, the blue dye molecule 332 has the characteristics that the light absorption capacity of the long axis is strong, the light absorption capacity of the short axis is weak, the blue dye molecule 332 can change the color of transmitted light, the light filtering effect is achieved, and only blue light can pass through the blue dye molecule 332 when white backlight irradiates the blue dye molecule 332. In the initial state, the third liquid crystal molecules 331 and the blue dye molecules 332 are in a lying posture, the third liquid crystal molecules 331 and the blue dye molecules 332 in the blue dye liquid crystal layer 33 are aligned parallel to the fifth substrate 31 and the sixth substrate 32, and the alignment direction of the blue dye liquid crystal layer 33 near the fifth substrate 31 is perpendicular to the alignment direction near the sixth substrate 32, so as to form a TN display mode. It is understood that the fifth substrate 31 is provided with a fifth alignment layer on a side facing the blue dye liquid crystal layer 33, the sixth substrate 32 is provided with a sixth alignment layer on a side facing the blue dye liquid crystal layer 33, and the fifth alignment layer and the sixth alignment layer are used for aligning the blue dye liquid crystal layer 33, and alignment directions of the fifth alignment layer and the sixth alignment layer are perpendicular to each other.

As shown in fig. 5, the sixth substrate 32 is an array substrate. The sixth substrate 32 is provided with a plurality of third scan lines 301, a plurality of third data lines 302 and a plurality of third thin film transistors 303, the sixth substrate 32 is provided with third pixel electrodes 321 and third thin film transistors 303 in the region corresponding to each blue sub-pixel P3, the sixth substrate 32 is provided with third pixel electrodes 321 corresponding to the blue sub-pixels P3 one by one, and the sixth substrate 32 is provided with five third pixel electrodes 321 in the region corresponding to the red sub-pixels P1 and the green sub-pixels P2. The third pixel electrode 321 is electrically connected to the third scan line 301 and the third data line 302 adjacent to the third thin film transistor 303 through the third thin film transistor 303. The fifth substrate 31 is provided with a third common electrode 311 which is matched with the third pixel electrode 321, and the third common electrode 311 is a planar electrode which covers the entire surface of the fifth substrate 31. The third thin film transistor 303 includes a third gate electrode, a third active layer, a third drain electrode, and a third source electrode, where the third gate electrode and the third scan line 301 are located on the same layer and electrically connected, the third gate electrode and the third active layer are separated by an insulating layer, the third source electrode is electrically connected to the third data line 302, and the third drain electrode and the third pixel electrode 321 are electrically connected by a contact hole.

In the present embodiment, a third barrier wall 34 corresponding to the third transparent barrier region is provided between the fifth substrate 31 and the sixth substrate 32, and the third barrier wall 34 partitions the gap between the fifth substrate 31 and the sixth substrate 32 into a plurality of third accommodating chambers. The third barrier wall 34 is a transparent structure and covers the area corresponding to the red sub-pixel P1 and the green sub-pixel P2, that is, the area corresponding to the red sub-pixel P1 and the green sub-pixel P2 between the fifth substrate 31 and the sixth substrate 32 is filled with the third barrier wall 34, so that the third barrier wall 34 can well support the area between the fifth substrate 31 and the sixth substrate 32, and therefore, no additional support column (PS) is required to be arranged in the third liquid crystal cell 30. The third barrier wall 34 may be made of OC material.

In this embodiment, the third barrier wall 34 is disposed on the sixth substrate 32 and faces the fifth substrate 31, the third barrier wall 34 is fixed to the sixth substrate 32, and after the fifth substrate 31 and the sixth substrate 32 are subjected to the box forming process, one end of the third barrier wall 34 away from the sixth substrate 32 is abutted against the fifth substrate 31.

Further, in order to prevent light leakage and color mixing, at least one of the first substrate 11, the third substrate 21 and the fifth substrate 31 is provided with a black matrix 112, and the black matrix 112 separates the projection areas of the red sub-pixel P1, the green sub-pixel P2 and the blue sub-pixel P3 on the substrate where the black matrix 112 is located. In this embodiment, the black matrix 112 is disposed on the first substrate 11, and the areas corresponding to the red sub-pixel P1, the green sub-pixel P2 and the blue sub-pixel P3 are filled with OC material, so that the side of the first substrate 11 facing the red dye liquid crystal layer 13 is smoother.

It is understood that for the dye liquid crystal layers in the first liquid crystal cell 10, the second liquid crystal cell 20 and the third liquid crystal cell 30, common liquid crystal molecules may be used to dope dye molecules, but pure dye liquid crystals may also be used to realize the functions of the present utility model.

The first substrate 11, the second substrate 12, the third substrate 21, the fourth substrate 22, the fifth substrate 31, and the sixth substrate 32 may be made of glass, acrylic, polycarbonate, or the like. The materials of the first pixel electrode 121, the first common electrode 111, the second pixel electrode 221, the second common electrode 211, the third pixel electrode 321, and the third common electrode 311 may be Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO), or the like.

As shown in fig. 6, when a screen is displayed, for the first liquid crystal cell 10, a common voltage is applied to the first common electrode 111, a corresponding gray scale voltage is applied to the first pixel electrode 121, a voltage difference is formed between the first pixel electrode 121 and the first common electrode 111 and a vertical electric field is generated (E1 in fig. 6), and the first liquid crystal molecules 131 and 132 in the red dye liquid crystal layer 13 are deflected in the vertical direction, so that the gray scale brightness of red light is controlled while controlling the intensity of light passing through the red dye liquid crystal layer 13. The gray scale voltages include 0 to 255 gray scale voltages, and when the first pixel electrode 121 applies different gray scale voltages, the red subpixel P1 exhibits different brightness. For the second liquid crystal cell 20, a common voltage is applied to the second common electrode 211, a corresponding gray scale voltage is applied to the second pixel electrode 221, a voltage difference is formed between the second pixel electrode 221 and the second common electrode 211 and a vertical electric field is generated (E2 in fig. 6), and the second liquid crystal molecules 231 and the green dye molecules 232 in the green dye liquid crystal layer 23 are deflected in the vertical direction, so that the gray scale brightness of green light is controlled while controlling the intensity of light passing through the green dye liquid crystal layer 23. The gray scale voltages include 0 to 255 gray scale voltages, and the green sub-pixel P2 exhibits different brightness when the second pixel electrode 221 applies different gray scale voltages. For the third liquid crystal cell 30, a common voltage is applied to the third common electrode 311, a corresponding gray scale voltage is applied to the third pixel electrode 321, a voltage difference is formed between the third pixel electrode 321 and the third common electrode 311 and a vertical electric field is generated (E3 in fig. 6), and the third liquid crystal molecules 331 and 332 in the blue dye liquid crystal layer 33 are deflected in the vertical direction, so that gray scale brightness of blue light is controlled while controlling the intensity of light passing through the blue dye liquid crystal layer 33. The gray scale voltages include 0 to 255 gray scale voltages, and the blue sub-pixel P3 exhibits different brightness when the third pixel electrode 321 applies different gray scale voltages. The red sub-pixel P1, the green sub-pixel P2 and the blue sub-pixel P3 on the display panel respectively control the gray scale brightness of the corresponding colors, thereby realizing the normal display of the color picture.

In summary, according to the utility model, by providing the first liquid crystal cell 10, the second liquid crystal cell 20 and the third liquid crystal cell 30 stacked on each other, the first liquid crystal cell 10 is provided with the red dye liquid crystal layer 13 in the region corresponding to the red sub-pixel P1, the second liquid crystal cell 20 is provided with the green dye liquid crystal layer 23 in the region corresponding to the green sub-pixel P2, the third liquid crystal cell 30 is provided with the blue dye liquid crystal layer 33 in the region corresponding to the blue sub-pixel P3, and the alignment directions of the two sides of the dye liquid crystal layers (the red dye liquid crystal layer 13, the green dye liquid crystal layer 23 and the blue dye liquid crystal layer 33) are mutually perpendicular, namely, the TN display mode is realized, and the dye liquid crystal has the characteristic that the capability of absorbing light in the long axis direction is strong, and the capability of absorbing light in the short axis direction is weak, so that the display panel does not need to use an upper polarizer and a lower polarizer, and the gray scale brightness control can be realized, and the backlight utilization ratio can be improved, the power consumption can be further improved, and the contrast can be improved, compared with the brightness requirement of the same design, the utility model can adopt a lower-emitting lower-cost backlight module to form compared with the backlight module with the same design; in addition, the red dye liquid crystal layer 13, the green dye liquid crystal layer 23 and the blue dye liquid crystal layer 33 can change the color of the transmitted light and play a role of filtering, so that the display panel does not need to be provided with a color resistance material, and the utilization rate of backlight is further improved. The estimated backlight loss can be reduced by 90%, the energy-saving design which is better than the OLED display mode can be realized, the service life of the product can be ensured, and the competitive advantage of the product is greatly increased.

Example two

Fig. 7 is a schematic structural diagram of a display device in an initial state according to a second embodiment of the present utility model. As shown in fig. 7, the display panel provided in the second embodiment of the present utility model is substantially the same as the display panel in the first embodiment (fig. 1 to 6), except that in the present embodiment:

the first isolation wall 14 is disposed on the first substrate 11 and faces the second substrate 12, the first isolation wall 14 is fixed with the first substrate 11, and after the first substrate 11 and the second substrate 12 perform the box forming process, one end of the first isolation wall 14 away from the first substrate 11 is abutted against the second substrate 12.

The second barrier wall 24 is disposed on the third substrate 21 and faces the fourth substrate 22, the second barrier wall 24 is fixed to the third substrate 21, and after the third substrate 21 and the fourth substrate 22 perform the box forming process, one end of the second barrier wall 24 away from the third substrate 21 is abutted against the fourth substrate 22.

The third isolation wall 34 is disposed on the fifth substrate 31 and faces the sixth substrate 32, the third isolation wall 34 is fixed to the fifth substrate 31, and after the fifth substrate 31 and the sixth substrate 32 are subjected to the box forming process, one end of the third isolation wall 34 away from the fifth substrate 31 is abutted against the sixth substrate 32.

Those skilled in the art will understand that the other structures and working principles of the present embodiment are the same as those of the first embodiment, and will not be described herein.

The utility model also provides a display device comprising the display panel. The display device further comprises a backlight module 40, wherein the backlight module 40 is arranged on the light incident side of the display panel, i.e. the display panel is arranged on the light emergent side of the backlight module 40, and the backlight module 40 is used for providing a backlight source for the display panel.

In this document, terms such as up, down, left, right, front, rear, etc. are defined by the positions of the structures in the drawings and the positions of the structures with respect to each other, for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed utility model. It should also be understood that the terms "first" and "second," etc., as used herein, are used merely for distinguishing between names and not for limiting the number and order.

The present utility model is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (10)

1. A display panel, characterized by comprising a first liquid crystal cell (10), a second liquid crystal cell (20) and a third liquid crystal cell (30) which are arranged in a mutually laminated manner;

the first liquid crystal box (10) is provided with a plurality of red sub-pixels (P1) and a first transparent barrier area for separating the red sub-pixels (P1), the first liquid crystal box (10) comprises a first substrate (11) and a second substrate (12) which is opposite to the first substrate (11), first accommodating cavities which are in one-to-one correspondence with the red sub-pixels (P1) are arranged between the first substrate (11) and the second substrate (12), red dye liquid crystal layers (13) are arranged in the first accommodating cavities, the red dye liquid crystal layers (13) are aligned parallel to the first substrate (11) and the second substrate (12), the alignment direction of the red dye liquid crystal layers (13) close to one side of the first substrate (11) is perpendicular to the alignment direction of one side close to the second substrate (12), first electrodes (121) which are in one-to-one correspondence with the red sub-pixels (P1) are arranged on the second substrate (12), and the first electrodes (121) are matched with the first electrodes (121);

the second liquid crystal box (20) is provided with a plurality of green sub-pixels (P2) and a second transparent barrier area for separating the plurality of green sub-pixels (P2), the second liquid crystal box (20) comprises a third substrate (21) and a fourth substrate (22) which is arranged opposite to the third substrate (21), a second accommodating cavity which is in one-to-one correspondence with the green sub-pixels (P2) is arranged between the third substrate (21) and the fourth substrate (22), a green dye liquid crystal layer (23) is arranged in the second accommodating cavity, the green dye liquid crystal layer (23) is parallel to the third substrate (21) and the fourth substrate (22) for alignment, the alignment direction of the green dye liquid crystal layer (23) close to one side of the third substrate (21) is mutually perpendicular to the alignment direction of one side close to the fourth substrate (22), a second electrode (221) which is in one-to-one correspondence with the green sub-pixels (P2) is arranged on the fourth substrate (22), and a second electrode (221) which is in one-to-one correspondence with the second pixel (21);

the third liquid crystal box (30) is provided with a plurality of blue sub-pixels (P3) and a third transparent barrier area for separating the plurality of blue sub-pixels (P3), the third liquid crystal box (30) comprises a fifth substrate (31) and a sixth substrate (32) which is arranged opposite to the fifth substrate (31), a third accommodating cavity which is in one-to-one correspondence with the blue sub-pixels (P3) is arranged between the fifth substrate (31) and the sixth substrate (32), a blue dye liquid crystal layer (33) is arranged in the third accommodating cavity, the blue dye liquid crystal layer (33) is parallel to the fifth substrate (31) and the sixth substrate (32) for alignment, the alignment direction of one side of the blue dye liquid crystal layer (33) close to the fifth substrate (31) is mutually perpendicular to the alignment direction of one side of the sixth substrate (32), a third pixel (321) which is in one-to-one correspondence with the blue sub-pixels (P3) is arranged on the sixth substrate (32), and a third electrode (321) which is arranged on the fifth substrate (31) is matched with the third pixel (311);

in the projection direction of the display panel, the red sub-pixel (P1), the green sub-pixel (P2) and the blue sub-pixel (P3) are offset from each other, the first transparent barrier region corresponds to the green sub-pixel (P2) and the blue sub-pixel (P3), the second transparent barrier region corresponds to the red sub-pixel (P1) and the blue sub-pixel (P3), and the third transparent barrier region corresponds to the green sub-pixel (P2) and the blue sub-pixel (P3).

2. The display panel according to claim 1, wherein a first barrier wall (14) corresponding to the first transparent barrier region is provided between the first substrate (11) and the second substrate (12), the first barrier wall (14) spacing a gap between the first substrate (11) and the second substrate (12) into a plurality of the first accommodation cavities;

a second baffle wall (24) corresponding to the second transparent baffle area is arranged between the third substrate (21) and the fourth substrate (22), and the second baffle wall (24) divides a gap between the third substrate (21) and the fourth substrate (22) into a plurality of second accommodating cavities;

a third baffle wall (34) corresponding to the third transparent baffle area is arranged between the fifth substrate (31) and the sixth substrate (32), and the third baffle wall (34) divides a gap between the fifth substrate (31) and the sixth substrate (32) into a plurality of third accommodating cavities.

3. The display panel according to claim 2, wherein the first barrier wall (14) is disposed on the first substrate (11) and faces the second substrate (12); or the first barrier wall (14) is arranged on the second substrate (12) and faces the first substrate (11).

4. The display panel according to claim 2, wherein the second barrier wall (24) is disposed on the third substrate (21) and faces the fourth substrate (22); or the second barrier wall (24) is arranged on the fourth base plate (22) and faces the third base plate (21).

5. The display panel according to claim 2, wherein the third barrier wall (34) is disposed on the fifth substrate (31) and faces the sixth substrate (32); or the third barrier wall (34) is arranged on the sixth substrate (32) and faces the fifth substrate (31).

6. The display panel according to any one of claims 1 to 5, wherein a plurality of first scan lines (101), a plurality of first data lines (102), and a plurality of first thin film transistors (103) are provided on the second substrate (12), the second substrate (12) is provided with the first pixel electrode (121) and the first thin film transistor (103) in a region corresponding to each of the red sub-pixels (P1), and the first pixel electrode (121) is electrically connected to the first scan lines (101) and the first data lines (102) adjacent to the first thin film transistor (103) through the first thin film transistor (103);

the fourth substrate (22) is provided with a plurality of second scanning lines (201), a plurality of second data lines (202) and a plurality of second thin film transistors (203), the fourth substrate (22) is provided with a second pixel electrode (221) and the second thin film transistors (203) in a region corresponding to each green sub-pixel (P2), and the second pixel electrode (221) is electrically connected with the second scanning lines (201) and the second data lines (202) adjacent to the second thin film transistors (203) through the second thin film transistors (203);

the sixth substrate (32) is provided with a plurality of third scanning lines (301), a plurality of third data lines (302) and a plurality of third thin film transistors (303), the sixth substrate (32) is provided with a third pixel electrode (321) and the third thin film transistors (303) in the area corresponding to each blue sub-pixel (P3), and the third pixel electrode (321) is electrically connected with the third scanning lines (301) and the third data lines (302) adjacent to the third thin film transistors (303) through the third thin film transistors (303).

7. A display panel according to any one of claims 1-5, characterized in that at least one of the first substrate (11), the third substrate (21) and the fifth substrate (31) is provided with a black matrix (112), the black matrix (112) spacing the projection areas of the red sub-pixels (P1), the green sub-pixels (P2) and the blue sub-pixels (P3) on the substrate where the black matrix (112) is located from each other.

8. A display panel according to any one of claims 1-5, characterized in that the first liquid crystal cell (10), the second liquid crystal cell (20) and the third liquid crystal cell (30) are arranged in a stack from top to bottom.

9. A display device comprising the display panel according to any one of claims 1-8.

10. The display device according to claim 9, further comprising a backlight module (40), wherein the backlight module (40) is disposed on the light-incident side of the display panel and is configured to provide a backlight source for the display panel.