Display panel and display device

Abstract

The embodiment of the utility model discloses a display panel and a display device. The display panel comprises a display liquid crystal box and a dimming box, the display liquid crystal box is provided with a plurality of pixel units distributed in an array mode, the display liquid crystal box comprises a color film substrate, an array substrate and a liquid crystal layer, and the color film substrate is provided with color resistance layers and a spacing matrix for spacing the multiple color resistance layers. The dimming box is provided with transparent areas corresponding to the pixel units and dimming areas for mutually separating the transparent areas, the pattern of the dimming areas corresponds to the pattern of the interval matrix, and the dimming areas corresponding to the edges of the blue pixel units and the dimming areas corresponding to the edges of the red pixel units and the green pixel units are mutually and independently subjected to dimming. Backlight rays are reflected through the distributed Bragg reflector matrix, so that the utilization rate of the backlight is improved; and a dimming box is matched, so that the size of the edge aperture ratio of the blue pixel unit, the red pixel unit and the green pixel unit can be adjusted, and the effect of adjusting color cast is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, in particular to a display panel and a display device. Background Art

[0002] With the development of science and technology, LCD (Liquid Crystal Display) displays have replaced bulky CRT displays and are increasingly integrated into people's daily lives. In particular, LCD displays have developed rapidly in recent years due to their small size, light weight, thin thickness, low power consumption, and no radiation. They have occupied a dominant position in the current flat panel display market and have been widely used in various large, medium and small sized products, covering almost all major electronic products in today's information society, such as LCD TVs, computers, mobile phones, PDAs, GPS, car displays, projection displays, cameras, digital cameras, electronic watches, calculators, electronic instruments, meters, public displays, virtual displays and other fields.

[0003] The liquid crystal display includes a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), a color filter substrate (Color Filter Substrate, CF Substrate) and liquid crystal molecules filled between the thin film transistor array substrate and the color filter substrate. During the image display process, each liquid crystal pixel in the LCD flat panel display is driven by a thin film transistor (Thin Film Transistor, referred to as TFT) integrated in the TFT thin film transistor array substrate, and then cooperates with the peripheral driving circuit to realize image display. Due to the filtering effect of the color filter substrate, the utilization rate of the backlight of the liquid crystal display is low, and the driving power consumption of the backlight module is large. When the existing liquid crystal display improves the utilization rate of the backlight, it will bring about the problem of yellowish or bluish chromaticity. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a display panel and a display device to solve the problems of low backlight utilization and unadjustable aperture ratio in the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The utility model provides a display panel, comprising a display liquid crystal box and a dimming box arranged on the light-emitting side of the display liquid crystal box, wherein the display liquid crystal box is used to control picture display, and the dimming box is used to control the aperture ratio of the display panel;

[0007] The display liquid crystal box has a plurality of pixel units distributed in an array, and the display liquid crystal box includes a color filter substrate, an array substrate arranged opposite to the color filter substrate, and a liquid crystal layer located between the color filter substrate and the array substrate, and the color filter substrate is provided with a color resist layer corresponding to the pixel unit and a spacing matrix for spacing the plurality of the color resist layers from each other, and the spacing matrix is ​​used for reflecting backlight;

[0008] The dimming box has a transparent area corresponding to the pixel unit and a dimming area that separates the multiple transparent areas from each other. The dimming area of ​​the dimming box is used to adjust the transmittance. The pattern of the dimming area corresponds to the pattern of the distributed Bragg reflector matrix. The multiple pixel units include red pixel units, green pixel units and blue pixel units. The dimming area corresponding to the edge of the blue pixel unit and the dimming area corresponding to the edges of the red pixel unit and the green pixel unit are independently dimmed.

[0009] Furthermore, the dimming box is an electrowetting dimming box, which includes a first substrate, a second substrate arranged opposite to the first substrate, a receiving cavity located between the first substrate and the second substrate, and an electrically controlled ink dye arranged in the receiving cavity, the receiving cavity corresponds to the dimming area, and a first electrode and a second electrode that cooperate with each other are respectively provided on two opposite cavity walls of each receiving cavity.

[0010] Furthermore, the first substrate is provided with the first electrode, and the second substrate is provided with the second electrode.

[0011] Furthermore, the second electrode corresponding to the edge of the blue pixel unit is insulated from the second electrodes corresponding to the edges of the red pixel unit and the green pixel unit.

[0012] Furthermore, the dimming area corresponding to the edge of the red pixel unit and the dimming area corresponding to the edge of the green pixel unit are dimmed independently of each other;

[0013] The second electrode corresponding to the edge of the blue pixel unit, the second electrode corresponding to the edge of the red pixel unit, and the second electrode corresponding to the edge of the green pixel unit are insulated from each other.

[0014] Furthermore, the second electrodes corresponding to edges of a column of blue pixel units are connected to each other, the second electrodes corresponding to edges of a column of red pixel units are connected to each other, and the second electrodes corresponding to edges of a column of green pixel units are connected to each other.

[0015] Furthermore, the second electrodes corresponding to any two adjacent edges of the pixel units are insulated from each other;

[0016] The second substrate is provided with a scan line, a dimming signal line and a thin film transistor. The scan line and the dimming signal line are insulated and cross each other. The second electrode is electrically connected to the scan line and the dimming signal line adjacent to the thin film transistor through the thin film transistor.

[0017] Furthermore, the spacing matrix is ​​a distributed Bragg reflector matrix, and the distributed Bragg reflector matrix is ​​used to reflect backlight.

[0018] Further, the distributed Bragg reflector matrix includes a short-pass filter and a long-pass filter, the short-pass filter is capable of transmitting blue light and reflecting red and green light, and the long-pass filter is capable of transmitting red and green light and reflecting blue light;

[0019] The short-pass filter and the long-pass filter are arranged to overlap each other, and the projection of the dimming area on the color filter substrate completely covers the distributed Bragg reflector matrix and covers a partial area of ​​each color resist layer.

[0020] Further, the distributed Bragg reflector matrix includes a short-pass filter and a long-pass filter, the short-pass filter is capable of transmitting blue light and reflecting red and green light, and the long-pass filter is capable of transmitting red and green light and reflecting blue light;

[0021] The short-pass filter and the long-pass filter are staggered with each other. The short-pass filter is arranged at the edge of the blue pixel unit, and the long-pass filter is arranged at the edges of the red pixel unit and the green pixel unit. The projection of the dimming area on the color film substrate at least completely covers the distributed Bragg reflector matrix.

[0022] The present application also provides a display device, comprising the display panel as described above.

[0023] The beneficial effects of the utility model are as follows: by replacing the black matrix on the color film substrate with a distributed Bragg reflector matrix, the backlight can be reflected to improve the utilization rate of the backlight; and a dimming box for controlling the aperture ratio is provided on the light-emitting side of the display liquid crystal box, the dimming area of ​​the dimming box corresponds to the pattern of the distributed Bragg reflector matrix, the dimming area corresponding to the edge of the blue pixel unit and the dimming area corresponding to the edge of the red pixel unit and the green pixel unit are dimmed independently of each other, so that the aperture ratios of the edges of the blue pixel unit, the red pixel unit and the green pixel unit can be controlled to achieve the effect of adjusting the color deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the display device in the initial state in the first embodiment of the present utility model;

[0025] Figure 2It is a schematic diagram of the planar structure of the array substrate in the first embodiment of the utility model;

[0026] Figure 3 It is a schematic diagram of the planar structure of the color film substrate in the first embodiment of the utility model;

[0027] Figure 4 It is a transmittance curve diagram of the long-pass filter and the short-pass filter in the first embodiment of the utility model for different light rays;

[0028] Figure 5 It is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the first embodiment of the utility model in the initial state;

[0029] Figure 6 It is a schematic diagram of the planar structure of the second electrode in the first embodiment of the utility model;

[0030] Figure 7 It is a schematic diagram of the planar structure of the second substrate in the first embodiment of the utility model;

[0031] Figure 8 is a schematic structural diagram of the display device in the first display state in the first embodiment of the present utility model;

[0032] Fig. 9 is a schematic diagram of the structure of the display device in the second display state in the first embodiment of the present utility model;

[0033] Fig.10 It is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the first embodiment of the utility model in the second display state;

[0034] Fig.11 is a schematic structural diagram of the display device in the third display state in the first embodiment of the present utility model;

[0035] Fig.12 It is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the first embodiment of the utility model when the dimming box is in the third display state;

[0036] Fig.13 is a schematic structural diagram of the display device in the fourth display state in the first embodiment of the utility model;

[0037] Fig.14 It is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the first embodiment of the utility model when the dimming box is in the fourth display state;

[0038] Fig.15 is a schematic structural diagram of the display device in the initial state in the second embodiment of the present utility model;

[0039] Fig.16 It is a schematic diagram of the planar structure of the color film substrate in the second embodiment of the utility model;

[0040] Fig.17 is a schematic diagram of the structure of the display device in the first display state in the second embodiment of the present utility model;

[0041] Fig.18 is a schematic diagram of the structure of the display device in the second display state in the second embodiment of the present utility model;

[0042] Fig.19 is a schematic structural diagram of the display device in the second embodiment of the present utility model in the third display state;

[0043] Fig. 20 It is a structural schematic diagram of the display device in the second embodiment of the present utility model in the fourth display state. DETAILED DESCRIPTION

[0044] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation methods, structures, features and effects of the display panel and display device proposed by the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments:

[0045] [Example 1]

[0046] Figure 1 It is a schematic structural diagram of the display device in the initial state in the first embodiment of the present utility model. Figure 2 It is a schematic diagram of the planar structure of the array substrate in the first embodiment of the utility model. Figure 3 It is a schematic diagram of the planar structure of the color film substrate in the first embodiment of the utility model. Figure 4 It is a transmittance curve diagram of the long-pass filter and the short-pass filter in the first embodiment of the utility model to different light rays. Figure 5 It is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the first embodiment of the utility model in the initial state. Figure 6 It is a schematic diagram of the planar structure of the second electrode in the first embodiment of the utility model. Figure 7 It is a schematic diagram of the planar structure of the second substrate in the first embodiment of the utility model.

[0047] like Figures 1 to 7 As shown, a display panel provided by the first embodiment of the present invention includes a display liquid crystal box and a dimming box 60 arranged on the light-emitting side of the display liquid crystal box, that is, the dimming box 60 is arranged on the upper side of the display liquid crystal box. The display liquid crystal box is used to control the picture display, and the dimming box 60 is used to control the aperture ratio of the display panel.

[0048] The display liquid crystal box has a plurality of pixel units SP distributed in an array, wherein the plurality of pixel units SP include red pixel units R, green pixel units G, and blue pixel units B. A column of red pixel units R, a column of green pixel units G, and a column of blue pixel units B are alternately arranged in sequence in the row direction. Of course, in other embodiments, the arrangement of the red pixel units R, the green pixel units G, and the blue pixel units B may also be adjusted according to actual needs.

[0049] The display liquid crystal box includes a color filter substrate 10, an array substrate 20 disposed opposite to the color filter substrate 10, and a liquid crystal layer 30 located between the color filter substrate 10 and the array substrate 20. In this embodiment, positive liquid crystal molecules are used in the liquid crystal layer 30, that is, liquid crystal molecules with positive dielectric anisotropy, such as Figure 1 As shown, in the initial state, the positive liquid crystal molecules in the liquid crystal layer 30 are aligned parallel to the color filter substrate 10 and the array substrate 20, and the alignment direction of the positive liquid crystal molecules close to the color filter substrate 10 is antiparallel to the positive liquid crystal molecules close to the array substrate 20.

[0050] The color filter substrate 10 is provided with a color resist layer 11 corresponding to the pixel unit SP and a spacing matrix that separates the multiple color resist layers 11 from each other. In this embodiment, the spacing matrix is, for example, a distributed Bragg reflector matrix 12. The distributed Bragg reflector matrix 12 is used to reflect the backlight, that is, the black matrix on the color filter substrate 10 is replaced by the distributed Bragg reflector matrix 12, so that there is no need to set a black matrix on the color filter substrate 10. The color resist layer 11, for example, includes red (R), green (G), and blue (B) color resist materials, which correspond to the sub-pixels of the red pixel unit R, the green pixel unit G, and the blue pixel unit B, respectively. The spacing matrix (distributed Bragg reflector matrix 12) is located between the red, green, and blue sub-pixels, so that adjacent sub-pixels are separated from each other by the distributed Bragg reflector matrix 12.

[0051] The dimming box 60 has a transparent area 60a corresponding to the pixel unit SP and a dimming area 60b that separates the multiple transparent areas 60a from each other. The dimming area 60b of the dimming box 60 can adjust the transmittance. The pattern of the dimming area 60b corresponds to the pattern of the spacing matrix (distributed Bragg reflector matrix 12). The dimming area 60b corresponding to the edge of the blue pixel unit B and the dimming area 60b corresponding to the edge of the red pixel unit R and the green pixel unit G are independently dimmed, that is, the dimming area 60b corresponding to the edge of the blue pixel unit B can adjust the transmittance of light independently, and the dimming area 60b corresponding to the edge of the red pixel unit R and the green pixel unit G can adjust the transmittance of light independently. In this embodiment, the transparent area 60a corresponds to the pixel unit SP one by one. Of course, in other embodiments, one transparent area 60a can also correspond to multiple pixel units SP.

[0052] In this embodiment, the dimming area 60b corresponding to two adjacent pixel units SP is divided into two, one half of which belongs to the dimming area 60b corresponding to the edge of one of the pixel units SP, and the other half belongs to the dimming area 60b corresponding to the edge of the other pixel unit SP. For example, the dimming area 60b corresponding to the blue pixel unit B and the green pixel unit G is divided into two, one half of which belongs to the dimming area 60b corresponding to the edge of one of the blue pixel units B, and the other half belongs to the dimming area 60b corresponding to the edge of the other green pixel unit G.

[0053] The distributed Bragg reflector matrix 12 includes a short-pass filter 121 and a long-pass filter 122. The short-pass filter 121 can transmit blue light and reflect red and green light, and the long-pass filter 122 can transmit red and green light and reflect blue light. In this embodiment, the short-pass filter 121 and the long-pass filter 122 are arranged to overlap each other. Under the cooperation of the short-pass filter 121 and the long-pass filter 122, the distributed Bragg reflector matrix 12 in any area can reflect red, green and blue light to improve the utilization rate of the backlight. The projection of the dimming area 60b on the color filter substrate 10 completely covers the distributed Bragg reflector matrix 12 and covers a part of each color resist layer 11, so that the line width of the distributed Bragg reflector matrix 12 is made relatively narrow, and the aperture ratio of the pixel unit SP is controlled by controlling the light-transmitting area size of the dimming area 60b. Among them, the projection of the dimming area 60b on the color film substrate 10 completely covers the area of ​​the color resist layer 11 which is 10% of the color resist layer 11. Of course, it can also be adjusted as needed. The projection of the dimming area 60b on the color film substrate 10 completely covers the area of ​​the color resist layer 11 which is the area size with adjustable aperture ratio.

[0054] like Figure 4 As shown, Figure 4 The middle curves R, G, and B represent the wavelengths of red, green, and blue light, respectively, and the curves L and S represent the transmittance of the long-pass filter 122 and the short-pass filter 121 to light of different wavelengths, respectively. Figure 4 It can be seen that the long-pass filter 122 has a good transmission effect on blue light with a wavelength below 490nm, and the transmittance can reach more than 95%; the short-pass filter 121 has a good transmission effect on red and green light with a wavelength of 500-680nm, and the transmittance can reach more than 95%.

[0055] like Figure 2 As shown, the array substrate 20 is provided with a plurality of scan lines, a plurality of data lines and a plurality of thin film transistors, and the plurality of scan lines and the plurality of data lines are insulated from each other and cross-defined to form a plurality of pixel units SP, each pixel unit SP is provided with a pixel electrode 22 and a thin film transistor, and the pixel electrode 22 is electrically connected to the scan line and the data line of the adjacent thin film transistor through the thin film transistor. Figure 3 As shown, the projection of the distributed Bragg reflector matrix 12 on the array substrate 20 overlaps with the scan lines, data lines and thin film transistors on the array substrate 20. The thin film transistor includes a gate, an active layer, a drain and a source. The gate and the scan line are located in the same layer and are electrically connected. The gate and the active layer are separated by an insulating layer. The source is electrically connected to the data line, and the drain is electrically connected to the pixel electrode 22 through a contact hole.

[0056] In this embodiment, a common electrode 21 is further provided on the side of the array substrate 20 facing the liquid crystal layer 30. The common electrode 21 and the pixel electrode 22 are located in different layers and are insulated and isolated by an insulating layer. The common electrode 21 can be located above or below the pixel electrode 22 ( Figure 1 As shown in the figure, the common electrode 21 is located below the pixel electrode 22). Preferably, the common electrode 21 is a planar electrode arranged on the entire surface, and the pixel electrode 22 is a block electrode arranged in each pixel unit or a slit electrode having a plurality of electrode strips to form a fringe field switching mode (Fringe Field Switching, FFS). Of course, in other embodiments, the pixel electrode 22 and the common electrode 21 are located on the same layer, but the two are insulated and isolated from each other. The pixel electrode 22 and the common electrode 21 can each include a plurality of electrode strips, and the electrode strips of the pixel electrode 22 and the electrode strips of the common electrode 21 are arranged alternately with each other to form an in-plane switching mode (In-Plane Switching, IPS); or, in other embodiments, the array substrate 20 is provided with a pixel electrode 22 on the side facing the liquid crystal layer 30, and the color film substrate 10 is provided with a common electrode 21 on the side facing the liquid crystal layer 30 to form a TN mode or a VA mode. As for other introductions to the TN mode and the VA mode, please refer to the prior art and will not be repeated here.

[0057] like Figure 1As shown, in this embodiment, the dimming box 60 is an electrowetting dimming box. Of course, in other embodiments, the dimming box 60 may also be an electronic ink dimming box, as long as the transmittance of the dimming area 60b can be controlled. The electrowetting dimming box includes a first substrate 61, a second substrate 62 arranged opposite to the first substrate 61, a receiving cavity 601 located between the first substrate 61 and the second substrate 62, and an electrically controlled ink dye 63 arranged in the receiving cavity 601. The receiving cavity 601 corresponds to the dimming area 60b, and the two opposite cavity walls of each receiving cavity 601 are respectively provided with a first electrode 611 and a second electrode 621 that cooperate with each other. A hydrophobic layer is also provided on the second substrate 62, and the hydrophobicity of the electrically controlled ink dye 63 is controlled by the first electrode 611 and the second electrode 621 to control the transmittance of the dimming area 60b. In this embodiment, a first electrode 611 is provided on the first substrate 61, and a second electrode 621 is provided on the second substrate 62, that is, the upper and lower walls of the accommodating cavity 601 are respectively provided with the first electrode 611 and the second electrode 621. Of course, in other embodiments, the left and right walls of the accommodating cavity 601 may also be respectively provided with the first electrode 611 and the second electrode 621. Among them, the area between the first substrate 61 and the second substrate 62 corresponding to the transparent area 60a can be filled with a transparent material, for example, a flat layer.

[0058] Furthermore, the second electrode 621 corresponding to the edge of the blue pixel unit B and the second electrodes 621 corresponding to the edges of the red pixel unit R and the green pixel unit G are insulated from each other.

[0059] In this embodiment, the dimming area 60b corresponding to the edge of the red pixel unit R and the dimming area 60b corresponding to the edge of the green pixel unit G are dimmed independently of each other. That is, the second electrode 621 corresponding to the edge of the blue pixel unit B, the second electrode 621 corresponding to the edge of the red pixel unit R, and the second electrode 621 corresponding to the edge of the green pixel unit G are insulated from each other. Of course, in other embodiments, the second electrode 621 corresponding to the edge of the red pixel unit R and the second electrode 621 corresponding to the edge of the green pixel unit G can be electrically connected to each other, that is, the dimming area 60b corresponding to the edge of the red pixel unit R and the dimming area 60b corresponding to the edge of the green pixel unit G are dimmed synchronously.

[0060] In one embodiment, if Figure 6 As shown, the second electrodes 621 corresponding to the edges of a column of blue pixel units B are connected to each other, the second electrodes 621 corresponding to the edges of a column of red pixel units R are connected to each other, and the second electrodes 621 corresponding to the edges of a column of green pixel units G are connected to each other. Thus, the dimming areas 60b corresponding to the edges of a column of blue pixel units B are dimmed synchronously, the dimming areas 60b corresponding to the edges of a column of red pixel units R are dimmed synchronously, and the dimming areas 60b corresponding to the edges of a column of green pixel units G are dimmed synchronously.

[0061] In another embodiment, Figure 7 As shown, the second electrodes 621 corresponding to the edges of any two adjacent pixel units SP are insulated from each other, that is, the dimming area 60b corresponding to the edge of each pixel unit SP is independently dimmed. The second substrate 62 is provided with a scanning line, a dimming signal line and a thin film transistor. The scanning line and the dimming signal line are insulated and crossed from each other. The second electrode 621 is electrically connected to the scanning line and the dimming signal line of the adjacent thin film transistor through the thin film transistor, that is, each second electrode 621 is controlled by the thin film transistor, so that the dimming area 60b corresponding to the edge of each pixel unit SP can achieve independent dimming. Among them, two voltage signals, black state and white state, are applied to the dimming signal line, and there is no need to apply a grayscale voltage signal.

[0062] The color filter substrate 10, the array substrate 20, the first substrate 61 and the second substrate 62 may be made of transparent substrates such as glass, acrylic and polycarbonate. The common electrode 21, the pixel electrode 22, the first electrode 611 and the second electrode 621 may be made of transparent electrodes such as indium tin oxide (ITO) or indium zinc oxide (IZO).

[0063] The display liquid crystal box includes an upper polarizer 41 and a lower polarizer 42, and the light transmission axis of the upper polarizer 41 is perpendicular to the light transmission axis of the lower polarizer 42. The upper polarizer 41 is arranged on the side of the dimming box 60 away from the color filter substrate 10, and the lower polarizer 42 is arranged on the side of the array substrate 20 away from the liquid crystal layer 30. Of course, the upper polarizer 41 can also be arranged between the dimming box 60 and the color filter substrate 10.

[0064] The utility model further provides a display device, comprising the display panel as described above and a backlight module 50. The backlight module 50 is located below the display panel and is used to provide a backlight source for the display panel.

[0065] The backlight module 50 includes a backlight source 51 and an anti-peep layer 52, and the anti-peep layer 52 is used to narrow the range of the light emission angle. A brightness enhancement film 53 is also provided between the backlight source 51 and the anti-peep layer 52, and the brightness enhancement film 53 increases the brightness of the backlight module 50. Among them, the anti-peep layer 52 is equivalent to a miniature shutter structure, which can block light with a larger incident angle and allow light with a smaller incident angle to pass through, so that the angle range of light passing through the anti-peep layer 52 becomes smaller. The anti-peep layer 52 includes a plurality of parallel light-blocking walls and a light-transmitting hole located between two adjacent light-blocking walls, and light-absorbing materials are provided on both sides of the light-blocking walls. Of course, the backlight source 51 can also be a light-collecting backlight source, so there is no need to set the anti-peep layer 52, but the light-collecting backlight source is more expensive than the conventional backlight source.

[0066] The backlight module 50 can be an edge-type backlight module or a direct-type backlight module. Preferably, the backlight module 50 adopts a collimated backlight (CBL) mode, which can collect light and ensure the display effect.

[0067] Figure 8 Schematic diagram of the structure of the display device in the first display state in the first embodiment of the present utility model. Figure 8 As shown, in the first display state, the display liquid crystal box displays a normal picture, no voltage is applied to the first electrode 611 and the second electrode 621 in all regions, and the electrically controlled ink dye 63 is tiled above the distributed Bragg reflector matrix 12. At this time, the shading area of ​​the electrically controlled ink dye 63 is larger than the area of ​​the distributed Bragg reflector matrix 12, that is, the tiled electrically controlled ink dye 63 acts as a black matrix to block external light sources, while not affecting the light passing through the color resistance opening area, so as to display normally. However, at this time, the aperture ratio of all pixel units SP is small, refer to Figure 5 .

[0068] Fig. 9 It is a structural schematic diagram of the display device in the second display state in the first embodiment of the utility model. Fig.10 1 is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the second display state in the first embodiment of the utility model. Fig. 9 and Fig.10 As shown, in the second display state, voltages of opposite polarities are applied to the first electrodes 611 and the second electrodes 621 of all regions, an electric field is formed between the first electrodes 611 and the second electrodes 621 of all regions, the electrically-controlled ink dye 63 is in a wet state and gathered together, and the gathering direction of the electrically-controlled ink dye 63 can be controlled according to the direction of the electric field between the first electrode 611 and the second electrode 621. At this time, the shading area of ​​the electrically-controlled ink dye 63 is equal to the area of ​​the distributed Bragg reflector matrix 12, so that the aperture ratio of all pixel units SP is larger, thereby increasing the light transmittance.

[0069] Fig.11 It is a structural schematic diagram of the display device in the first embodiment of the present utility model in the third display state. Fig.12 1 is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the third display state in the first embodiment of the utility model. Fig.11 and Fig.12As shown, in the third display state, voltages of opposite polarities are applied to the first electrode 611 and the second electrode 621 corresponding to the edges of the red pixel unit R and the green pixel unit G, and an electric field is formed between the first electrode 611 and the second electrode 621 corresponding to the edges of the red pixel unit R and the green pixel unit G. The electrically controlled ink dye 63 corresponding to the edges of the red pixel unit R and the green pixel unit G is in a wet state and gathered together. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edges of the red pixel unit R and the green pixel unit G is equal to the area of ​​the distributed Bragg reflector matrix 12, so that the red pixel unit The aperture ratio of the blue pixel unit R and the green pixel unit G is increased, and the transmittance of the red and green light is increased; while the first electrode 611 and the second electrode 621 corresponding to the edge of the blue pixel unit B do not apply voltage, and the electrically controlled ink dye 63 corresponding to the edge of the blue pixel unit B is flatly spread above the distributed Bragg reflector matrix 12. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edge of the blue pixel unit B is larger than the area of ​​the distributed Bragg reflector matrix 12, that is, the flatly spread electrically controlled ink dye 63 acts as a black matrix, and the aperture ratio of the blue pixel unit B is reduced to reduce the transmittance of the blue light, thereby improving the problem of blue color.

[0070] Fig.13 It is a schematic structural diagram of the display device in the first embodiment of the present utility model in the fourth display state. Fig.14 1 is a schematic diagram of the planar structure of the transparent area and the dimming area of ​​the dimming box in the fourth display state in the first embodiment of the present utility model. Fig.11 and Fig.12 As shown, in the fourth display state, the first electrode 611 and the second electrode 621 corresponding to the edge of the blue pixel unit B apply voltages of opposite polarities, and an electric field is formed between the first electrode 611 and the second electrode 621 corresponding to the edge of the blue pixel unit B. The electrically controlled ink dye 63 corresponding to the edge of the blue pixel unit B is in a wet state and gathered together. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edge of the blue pixel unit B is equal to the area of ​​the distributed Bragg reflector matrix 12, so that the aperture ratio of the blue pixel unit B is increased, and the transmittance of the blue light is increased; while the red pixel unit R and the green pixel unit R are No voltage is applied to the first electrode 611 and the second electrode 621 corresponding to the edge of the red pixel unit G, and the electrically controlled ink dye 63 corresponding to the edges of the red pixel unit R and the green pixel unit G is flatly spread above the distributed Bragg reflector matrix 12. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edges of the red pixel unit R and the green pixel unit G is larger than the area of ​​the distributed Bragg reflector matrix 12, that is, the flatly spread electrically controlled ink dye 63 acts as a black matrix, and the aperture ratio of the red pixel unit R and the green pixel unit G is reduced to reduce the transmittance of red and green light, thereby improving the problem of yellowish color.

[0071] [Example 2]

[0072] Fig.15 It is a schematic diagram of the structure of the display device in the initial state in the second embodiment of the present utility model. Fig.16 Schematic diagram of the planar structure of the color film substrate in the second embodiment of the present utility model. Fig.15 and Fig.16 As shown, the display panel and display device provided in the second embodiment of the present invention are different from those in the first embodiment ( Figures 1 to 14 ) are substantially the same, except that, in this embodiment:

[0073] The distributed Bragg reflector matrix 12 includes a short-pass filter 121 and a long-pass filter 122. The short-pass filter 121 can transmit blue light and reflect red and green light, and the long-pass filter 122 can transmit red and green light and reflect blue light. In this embodiment, the short-pass filter 121 and the long-pass filter 122 are staggered with each other. The short-pass filter 121 is arranged at the edge of the blue pixel unit B, and the long-pass filter 122 is arranged at the edge of the red pixel unit R and the green pixel unit G. The projection of the dimming area 60b on the color filter substrate 10 at least completely covers the distributed Bragg reflector matrix 12. The projection of the dimming area 60b on the color filter substrate 10 can be aligned with the distributed Bragg reflector matrix 12, or it can also cover a partial area of ​​each color resist layer 11. Therefore, the distributed Bragg reflector matrix 12 corresponding to the edge of the blue pixel unit B can transmit blue light and reflect red and green light; the distributed Bragg reflector matrix 12 corresponding to the edge of the red pixel unit R and the green pixel unit G can transmit red and green light and reflect blue light. Therefore, the range of adjusting the aperture ratio of the dimming zone 60 b is maximized while reducing the impact on the original aperture ratio of the pixel unit SP.

[0074] Fig.17 Schematic diagram of the structure of the display device in the first display state in the second embodiment of the present utility model. Fig.17 As shown, in the first display state, the display liquid crystal box displays a normal picture, no voltage is applied to the first electrode 611 and the second electrode 621 of all regions, and the electrically controlled ink dye 63 is tiled above the distributed Bragg reflector matrix 12. At this time, the light shielding area of ​​the electrically controlled ink dye 63 is larger than the area of ​​the distributed Bragg reflector matrix 12, that is, the tiled electrically controlled ink dye 63 acts as a black matrix to block the external light source, while not affecting the light passing through the color resistance opening area, so as to display normally, but at this time, the aperture ratio of all pixel units SP is small. Among them, the blue light transmitted by the short-pass filter 121 corresponding to the edge of the blue pixel unit B is absorbed by the electrically controlled ink dye 63, and the red and green light transmitted by the long-pass filter 122 corresponding to the edge of the red pixel unit R and the green pixel unit G are also absorbed by the electrically controlled ink dye 63.

[0075] Fig.18 Schematic diagram of the structure of the display device in the second display state in the second embodiment of the present utility model. Fig.18 As shown, in the second display state, the first electrodes 611 and the second electrodes 621 of all regions are applied with voltages of opposite polarity, an electric field is formed between the first electrodes 611 and the second electrodes 621 of all regions, the electrically controlled ink dye 63 is in a wet state and gathered together, and the gathering direction of the electrically controlled ink dye 63 can be controlled according to the direction of the electric field between the first electrode 611 and the second electrode 621. At this time, the light shielding area of ​​the electrically controlled ink dye 63 is equal to the area of ​​the distributed Bragg reflector matrix 12, so that the aperture ratio of all pixel units SP is large, and the light transmittance is increased. Among them, the blue light transmitted by the short-pass filter 121 corresponding to the edge of the blue pixel unit B can pass through the dimming box 60, and the red and green light transmitted by the long-pass filter 122 corresponding to the edge of the red pixel unit R and the green pixel unit G can also pass through the dimming box 60, thereby increasing the backlight transmittance.

[0076] Fig.19 Schematic diagram of the structure of the display device in the third display state in the second embodiment of the present utility model. Fig.19 As shown, in the third display state, voltages of opposite polarities are applied to the first electrode 611 and the second electrode 621 corresponding to the edges of the red pixel unit R and the green pixel unit G, and an electric field is formed between the first electrode 611 and the second electrode 621 corresponding to the edges of the red pixel unit R and the green pixel unit G. The electrically controlled ink dye 63 corresponding to the edges of the red pixel unit R and the green pixel unit G is in a wet state and gathered together. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edges of the red pixel unit R and the green pixel unit G is equal to the area of ​​the distributed Bragg reflector matrix 12, so that the red pixel unit The aperture ratio of the blue pixel unit R and the green pixel unit G increases, and the transmittance of the red and green light is increased; while the first electrode 611 and the second electrode 621 corresponding to the edge of the blue pixel unit B do not apply voltage, and the electrically controlled ink dye 63 corresponding to the edge of the blue pixel unit B is tiled above the distributed Bragg reflector matrix 12. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edge of the blue pixel unit B is larger than the area of ​​the distributed Bragg reflector matrix 12, that is, the tiled electrically controlled ink dye 63 acts as a black matrix, and the aperture ratio of the blue pixel unit B is reduced to reduce the transmittance of the blue light, thereby improving the problem of blue color. Among them, the blue light transmitted by the short-pass filter 121 corresponding to the edge of the blue pixel unit B is absorbed by the electrically controlled ink dye 63, and the red and green light transmitted by the long-pass filter 122 corresponding to the edge of the red pixel unit R and the green pixel unit G can pass through the dimming box 60, thereby increasing the transmittance of red and green light, reducing the transmittance of blue light, and further improving the problem of blue color.

[0077] Fig. 20 Schematic diagram of the structure of the display device in the fourth display state in the second embodiment of the present utility model. Fig. 20As shown, in the fourth display state, the first electrode 611 and the second electrode 621 corresponding to the edge of the blue pixel unit B apply voltages of opposite polarities, and an electric field is formed between the first electrode 611 and the second electrode 621 corresponding to the edge of the blue pixel unit B. The electrically controlled ink dye 63 corresponding to the edge of the blue pixel unit B is in a wet state and gathered together. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edge of the blue pixel unit B is equal to the area of ​​the distributed Bragg reflector matrix 12, so that the aperture ratio of the blue pixel unit B is increased, and the transmittance of the blue light is increased; while the red pixel unit R and the green pixel unit R are The first electrode 611 and the second electrode 621 corresponding to the edge of the red pixel unit G do not apply voltage, and the electrically controlled ink dye 63 corresponding to the edge of the red pixel unit R and the green pixel unit G is tiled above the distributed Bragg reflector matrix 12. At this time, the shading area of ​​the electrically controlled ink dye 63 at the edge of the red pixel unit R and the green pixel unit G is larger than the area of ​​the distributed Bragg reflector matrix 12, that is, the tiled electrically controlled ink dye 63 acts as a black matrix, and the aperture ratio of the red pixel unit R and the green pixel unit G is reduced to reduce the transmittance of red and green light, thereby improving the problem of yellowish color. Among them, the red and green light transmitted by the long-pass filter 122 corresponding to the edge of the red pixel unit R and the green pixel unit G is absorbed by the electrically controlled ink dye 63, and the blue light transmitted by the short-pass filter 121 corresponding to the edge of the blue pixel unit B can pass through the dimming box 60, thereby increasing the transmittance of blue light and reducing the transmittance of red and green light, further improving the problem of yellowish color.

[0078] It should be understood by those skilled in the art that the rest of the structure and working principle of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0079] In this document, the directional words such as up, down, left, right, front, and back are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second" used in this document are only used to distinguish names and are not used to limit quantity and order.

[0080] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the technical contents disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A display panel, characterized in that: It comprises a display liquid crystal box and a dimming box (60) arranged on the light-emitting side of the display liquid crystal box, the display liquid crystal box is used to control picture display, and the dimming box (60) is used to control the aperture ratio of the display panel; The display liquid crystal box has a plurality of pixel units (SP) distributed in an array, the display liquid crystal box comprises a color filter substrate (10), an array substrate (20) arranged opposite to the color filter substrate (10), and a liquid crystal layer (30) located between the color filter substrate (10) and the array substrate (20), and the color filter substrate (10) is provided with a color resist layer (11) corresponding to the pixel unit (SP) and a spacing matrix for spacing the plurality of color resist layers (11) from each other; The dimming box (60) comprises a transparent area (60a) corresponding to the pixel unit (SP) and a dimming area (60b) separating a plurality of the transparent areas (60a) from each other. The dimming area (60b) of the dimming box (60) is used to adjust light transmittance. The pattern of the dimming area (60b) corresponds to the pattern of the spacing matrix. The plurality of pixel units (SP) comprise a red pixel unit (R), a green pixel unit (G) and a blue pixel unit (B). The dimming area (60b) corresponding to the edge of the blue pixel unit (B) and the dimming area (60b) corresponding to the edges of the red pixel unit (R) and the green pixel unit (G) are dimmed independently of each other.

2. The display panel according to claim 1, characterized in that: The dimming box (60) is an electrowetting dimming box, comprising a first substrate (61), a second substrate (62) arranged opposite to the first substrate (61), a receiving cavity (601) located between the first substrate (61) and the second substrate (62), and an electrically controlled ink dye (63) arranged in the receiving cavity (601), the receiving cavity (601) corresponding to the dimming area (60b), and a first electrode (611) and a second electrode (621) that cooperate with each other are respectively arranged on two opposite cavity walls of each receiving cavity (601).

3. The display panel according to claim 2, characterized in that: The second electrode (621) corresponding to the edge of the blue pixel unit (B) is insulated from the second electrode (621) corresponding to the edge of the red pixel unit (R) and the green pixel unit (G).

4. The display panel according to claim 2, characterized in that: The dimming area (60b) corresponding to the edge of the red pixel unit (R) and the dimming area (60b) corresponding to the edge of the green pixel unit (G) are dimmed independently of each other; The second electrode (621) corresponding to the edge of the blue pixel unit (B), the second electrode (621) corresponding to the edge of the red pixel unit (R), and the second electrode (621) corresponding to the edge of the green pixel unit (G) are insulated from each other.

5. The display panel according to claim 4, characterized in that: The second electrodes (621) corresponding to the edges of a column of blue pixel units (B) are connected to each other, the second electrodes (621) corresponding to the edges of a column of red pixel units (R) are connected to each other, and the second electrodes (621) corresponding to the edges of a column of green pixel units (G) are connected to each other.

6. The display panel according to claim 4, characterized in that: The second electrodes (621) corresponding to the edges of any two adjacent pixel units (SP) are insulated from each other; The second substrate (62) is provided with a scanning line, a dimming signal line and a thin film transistor, the scanning line and the dimming signal line are insulated and cross each other, and the second electrode (621) is electrically connected to the scanning line and the dimming signal line adjacent to the thin film transistor through the thin film transistor.

7. The display panel according to claim 1, characterized in that: The spacing matrix is ​​a distributed Bragg reflector matrix (12), and the distributed Bragg reflector matrix (12) is used to reflect backlight.

8. The display panel according to claim 7, characterized in that: The distributed Bragg reflector matrix (12) comprises a short-pass filter (121) and a long-pass filter (122), wherein the short-pass filter (121) is capable of transmitting blue light and reflecting red and green light, and the long-pass filter (122) is capable of transmitting red and green light and reflecting blue light; The short-pass filter (121) and the long-pass filter (122) are arranged to overlap each other, and the projection of the dimming area (60b) on the color film substrate (10) completely covers the distributed Bragg reflector matrix (12) and covers a partial area of ​​each color resist layer (11).

9. The display panel according to claim 7, characterized in that: The distributed Bragg reflector matrix (12) comprises a short-pass filter (121) and a long-pass filter (122), wherein the short-pass filter (121) is capable of transmitting blue light and reflecting red and green light, and the long-pass filter (122) is capable of transmitting red and green light and reflecting blue light; The short-pass filter (121) and the long-pass filter (122) are staggered with each other; the short-pass filter (121) is arranged at the edge of the blue pixel unit (B); the long-pass filter (122) is arranged at the edge of the red pixel unit (R) and the green pixel unit (G); and the projection of the dimming area (60b) on the color film substrate (10) at least completely covers the distributed Bragg reflector matrix (12).

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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