Display panel and display device

Abstract

The application belongs to the display field and particularly relates to a display panel and a display device. The display panel comprises a first substrate, a second substrate, a spacer and a color-changing structure layer. The second substrate is arranged on one side of the first substrate. The spacer is arranged between the first substrate and the second substrate. The color-changing structure layer is arranged on part of the spacer. The color-changing structure layer covers at least part of an area of the spacer close to one end of the second substrate. The color-changing structure layer comprises a first state and a second state. In the first state, the color-changing structure layer can absorb light or transmit light. In the second state, the color-changing structure layer can reflect colored light to adjust the color temperature. The color-changing structure layer does not reflect light or reflect colored light to adjust the color temperature of the display panel. The red, green and blue three-color sub-pixel brightness and the three-color mixing ratio do not need to be adjusted. The problem that the adjustment of the color temperature is accompanied by brightness loss is solved. The display effect of the display panel and the display device is improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, specifically relating to a display panel and a display device. Background Technology

[0002] With the development of display technology, Thin Film Transistor Liquid Crystal Display (TFT-LCD) has become the mainstream display device due to its advantages such as high image quality, power saving, thin body and mature and stable manufacturing process. It is widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers.

[0003] A liquid crystal display (LCD) includes a backlight module, a liquid crystal layer, and a color filter layer. The color filter layer includes red, green, and blue color resists. The backlight module provides uniform white light, and the red, green, and blue color resists in the color filter layer filter the white light, forming red, green, and blue sub-pixels. Simultaneously, the source drive circuit independently adjusts the liquid crystal driving voltage of the red, green, and blue sub-pixels, enabling brightness adjustment of these sub-pixels.

[0004] Existing LCD monitors adjust the brightness and color mixing ratio of red, green, and blue sub-pixels independently through source drive circuits. However, since color temperature and brightness are strongly correlated, adjusting the color temperature inevitably results in a loss of brightness, affecting the display effect. For example, if the LCD monitor's backlight is natively bluish, the brightness of the blue sub-pixels can only be reduced through the liquid crystal layer; the brightness of the red and green sub-pixels cannot be actively increased. Summary of the Invention

[0005] The purpose of this application is to provide a display panel and display device to solve the problem that adjusting the color temperature results in a loss of brightness, which affects the display effect of the display panel and display device.

[0006] To achieve the above objectives, this application provides a display panel, including a first substrate and a second substrate, wherein the second substrate is disposed on one side of the first substrate, and one of the first substrate and the second substrate is an array substrate and the other is an opposing substrate. The display panel further includes:

[0007] A spacer is disposed between the first substrate and the second substrate;

[0008] A color-changing structural layer is disposed on at least a portion of the spacer, the color-changing structural layer at least covering a portion of the spacer near one end of the second substrate, the color-changing structural layer includes a first state and a second state, in the first state the color-changing structural layer can absorb or transmit light, in the second state the color-changing structural layer can reflect colored light for adjusting color temperature.

[0009] Optionally, the spacer has a receiving hole at the end away from the first substrate, and the color-changing structural layer is disposed in the receiving hole.

[0010] Optionally, the color-changing structure layer includes a first sleeve, a second sleeve, a first transparent isolation layer, a second transparent isolation layer, a transparent encapsulation layer, a thermally expanding filler, a first elastic filler, a second elastic filler, a first colored liquid, and a second colored liquid. The first sleeve is disposed within the receiving hole, and the second sleeve is disposed between the first sleeve and the inner wall of the receiving hole. The height of the first sleeve is less than the height of the second sleeve, and the height of the second sleeve is less than the depth of the receiving hole. Both the first sleeve and the second sleeve are sealed to the bottom surface of the receiving hole.

[0011] The first transparent isolation layer is disposed at one end of the first sleeve near the second substrate and is sealed to the first sleeve. The second transparent isolation layer is disposed at one end of the second sleeve near the second substrate and is sealed to the second sleeve. The transparent encapsulation layer is disposed at the opening of the receiving hole and is sealed to the spacer. The thermal expansion filler is filled inside the first sleeve. The first elastic filler is filled between the first sleeve and the second sleeve. The first colored liquid is filled at least between the first transparent isolation layer and the second transparent isolation layer. The second elastic filler is filled between the second sleeve and the inner wall of the receiving hole. The second colored liquid is filled at least between the second transparent isolation layer and the transparent encapsulation layer.

[0012] The second colored liquid is black, the first colored liquid is cyan, and the thermal expansion filler is magenta. In the first state, the second colored liquid blocks the first colored liquid and the thermal expansion filler. In the second state, the thermal expansion filler expands, squeezing the second colored liquid on the side of the thermal expansion filler close to the second substrate, or squeezing the second colored liquid and the first colored liquid on the side of the thermal expansion filler close to the second substrate simultaneously.

[0013] Optionally, the thermally expandable filler includes a thermally expandable matrix and a coloring material, wherein the coloring material is uniformly mixed in the thermally expandable matrix; or

[0014] The thermally expandable filler includes a thermally expandable matrix and a third colored liquid layer. The third colored liquid layer is located on the side of the thermally expandable matrix closer to the second substrate, and the color of the third colored liquid layer includes magenta.

[0015] Optionally, the display panel further includes a heating electrode disposed between the spacer and the first substrate, or the heating electrode disposed within the first sleeve on the bottom surface of the receiving hole.

[0016] Optionally, the color-changing structure layer includes a first transparent insulating layer, a first transparent electrode layer, a transparent encapsulation layer, an electrophoretic solution, and colored charged particles. The transparent encapsulation layer is disposed at the opening of the receiving hole and is sealed to the spacer. The first transparent electrode layer is disposed on the side of the transparent encapsulation layer near the first substrate. The first transparent insulating layer is disposed on the side of the first transparent electrode layer near the first substrate. The electrophoretic solution fills the receiving hole, and the colored charged particles are disposed in the electrophoretic solution.

[0017] Optionally, the colored charged particles include cyan charged particles and magenta charged particles, wherein the cyan charged particles and the magenta charged particles have different charges, and the electrophoretic solution also contains uncharged yellow particles.

[0018] Optionally, the color-changing structural layer is disposed on the end face of the spacer or the color-changing structural layer is at least partially embedded in the spacer. The color-changing structural layer includes a first transparent electrode layer, an electrochromic layer, and a second transparent electrode layer. The electrochromic layer is disposed between the first transparent electrode layer and the second transparent electrode layer. In the first state, the electrochromic layer is transparent to light. In the second state, the electrochromic layer is reflective of colored light for adjusting the color temperature.

[0019] Optionally, the spacer has a receiving hole at the end away from the first substrate. The color-changing structure layer further includes a transparent encapsulation layer, which is disposed at the opening of the receiving hole and is sealed to the spacer. The first transparent electrode layer, the electrochromic layer, and the second transparent electrode layer are disposed between the bottom surface of the receiving hole and the transparent encapsulation layer. The electrochromic layer includes a first color-changing material and a second color-changing material. In the colored state, the first color-changing material is cyan, and the second color-changing material is magenta. The activation voltages of the first color-changing material and the second color-changing material are different.

[0020] This application also provides a display device, including:

[0021] Backlight module;

[0022] The display panel is located on the light-emitting side of the backlight module.

[0023] The display panel and display device disclosed in this application have the following beneficial effects:

[0024] In this application, the display panel includes a first substrate, a second substrate, spacers, and a color-changing structural layer. The second substrate is disposed on one side of the first substrate, the spacers are disposed between the first and second substrates, and the color-changing structural layer is disposed on a portion of the spacers. The color-changing structural layer at least covers a portion of the spacers near one end of the second substrate. The color-changing structural layer includes a first state and a second state. In the first state, the color-changing structural layer can absorb or transmit light. In the second state, the color-changing structural layer can reflect colored light for adjusting the color temperature. This application adjusts the color temperature of the display panel by using a color-changing structural layer that does not reflect or reflects colored light, eliminating the need to adjust the brightness of the red, green, and blue sub-pixels and the mixing ratio of the three colors. This solves the problem of brightness loss associated with color temperature adjustment and improves the display effect of the display panel.

[0025] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0028] Figure 1 This is a schematic diagram of the display panel structure in Embodiment 1 of this application.

[0029] Figure 2 This is a schematic diagram of the spacer and color-changing structural layer in Embodiment 1 of this application.

[0030] Figure 3 This is a schematic diagram of the color-changing structural layer reflecting cyan light in Embodiment 1 of this application.

[0031] Figure 4 This is a schematic diagram of the color-changing structural layer reflecting magenta light in Embodiment 1 of this application.

[0032] Figure 5 This is a schematic diagram of the spacer and color-changing structural layer in Embodiment 2 of this application.

[0033] Figure 6 This is a schematic diagram of the color-changing structural layer reflecting cyan light in Embodiment 2 of this application.

[0034] Figure 7 This is a schematic diagram of the color-changing structural layer reflecting magenta light in Embodiment 2 of this application.

[0035] Figure 8 This is a schematic diagram of the spacer and color-changing structural layer in Embodiment 3 of this application.

[0036] Figure 9 This is a schematic diagram of the display device in Embodiment 4 of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100, First substrate; 200, Second substrate;

[0039] 300. Spacer; 301. Receiving hole;

[0040] 400, Color-changing structural layer; 411, First sleeve; 412, Second sleeve; 421, First transparent isolation layer; 4211, Liquid passage hole; 422, Second transparent isolation layer; 423, Third transparent isolation layer; 430, Transparent encapsulation layer; 440, Thermally expandable filler; 441, Thermally expandable substrate; 442, Third colored liquid layer; 451, First elastic filler; 452, Second elastic filler; 461, First colored liquid; 462, Second colored liquid; 471, First transparent electrode layer; 472, Second transparent electrode layer; 481, Electrophoretic solution; 482, Cyan charged particles; 483, Magenta charged particles; 484, Yellow particles; 490, Electrochromic layer; 500, Heating electrode;

[0041] 10. Display panel; 20. Backlight module. Detailed Implementation

[0042] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0043] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0044] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0045] Example 1

[0046] See Figure 1 As shown, in this embodiment, the display panel 10 includes a first substrate 100, a second substrate 200, a spacer 300, and a color-changing structure layer 400. The second substrate 200 is disposed on one side of the first substrate 100. One of the first substrate 100 and the second substrate 200 is an array substrate and the other is a counter substrate. The counter substrate includes a color filter substrate.

[0047] Spacer 300 is disposed between the first substrate 100 and the second substrate 200. Spacer 300 can be made of black organic material, such as dyed polystyrene or polyimide. Spacer 300 can be divided into main spacer 300 (Main PS) and sub spacer 300 (Sub PS). There is a certain height difference between the main spacer 300 and the sub spacer 300, with the height of the main spacer 300 being greater than that of the sub spacer 300. When the display panel 10 is compressed, the main spacer 300 initially bears all the pressure. When the pressure reaches the threshold that the main spacer 300 can withstand, the sub spacer 300 will assist the main spacer 300 in bearing part of the pressure.

[0048] A color-changing structural layer 400 is disposed on some of the spacers 300. For example, a color-changing structural layer 400 is disposed on the secondary spacers 300, while the primary spacers 300 do not have a color-changing structural layer 400. It should be noted that while a color-changing structural layer 400 is disposed on the secondary spacers 300, the primary spacers 300 do not have a color-changing structural layer 400, but this is not a limitation. A color-changing structural layer 400 can also be disposed on both the primary and secondary spacers 300, depending on the specific circumstances. The display panel 10 includes multiple secondary spacers 300, and the color-changing structural layer 400 can be disposed on some of the secondary spacers 300, or on each of the secondary spacers 300.

[0049] The color-changing structural layer 400 at least covers a portion of the spacer 300 near the end of the second substrate 200. The color-changing structural layer 400 can be disposed on the end face of the spacer 300 near the second substrate 200, or it can be partially or completely embedded in the spacer 300. The color-changing structural layer 400 includes a first state and a second state. In the first state, the color-changing structural layer 400 can absorb or transmit light; in the second state, the color-changing structural layer 400 can reflect colored light for adjusting color temperature.

[0050] The colored light can be cyan or magenta. Specifically, when ambient natural light passes through the second substrate 200 and shines on the spacer 300, the color-changing structure layer 400 can absorb or transmit light when color temperature adjustment is not required. When color temperature adjustment is required, the color-changing structure layer 400 reflects cyan light, making the display panel 10 appear brighter and with a higher color temperature; or the color-changing structure layer 400 reflects magenta light, increasing the proportion of red light in the display panel 10, lowering the overall color temperature of the display panel 10, and making the display panel 10 appear warmer. It should be noted that the colored light reflected by the color-changing structure layer 400 can be cyan or magenta, but is not limited to these. The colored light reflected by the color-changing structure layer 400 can also be red, green, or blue light, depending on the specific situation.

[0051] In some technical solutions, liquid crystal displays (LCDs) use source drive circuits to independently adjust the liquid crystal driving voltages of the red, green, and blue sub-pixels, thereby adjusting the brightness and mixing ratio of the three colors to achieve color temperature adjustment. However, since color temperature and brightness are strongly correlated, adjusting the color temperature inevitably results in a loss of brightness, affecting the display effect.

[0052] In this embodiment, the display panel 10 includes a first substrate 100, a second substrate 200, spacers 300, and a color-changing structural layer 400. The second substrate 200 is disposed on one side of the first substrate 100, the spacers 300 are disposed between the first substrate 100 and the second substrate 200, and the color-changing structural layer 400 is disposed on a portion of the spacers 300. The color-changing structural layer 400 at least covers a portion of the spacers 300 near the end of the second substrate 200. The color-changing structural layer 400 includes a first state and a second state. In the first state, the color-changing structural layer 400 can absorb or transmit light. In the second state, the color-changing structural layer 400 can reflect colored light for adjusting the color temperature. This application adjusts the color temperature of the display panel 10 by using the color-changing structural layer 400 to adjust the brightness of the red, green, and blue sub-pixels and the mixing ratio of the three colors, without needing to adjust the brightness loss associated with adjusting the color temperature, thus improving the display effect of the display panel 10.

[0053] In some embodiments, the spacer 300 has a receiving hole 301 at the end away from the first substrate 100, and the color-changing structural layer 400 is disposed in the receiving hole 301.

[0054] The color-changing structural layer 400 is disposed in the receiving hole 301 to prevent the color-changing structural layer 400 from being damaged due to pressure when the display panel 10 is subjected to external force.

[0055] In some embodiments, see Figures 2 to 4 As shown, the color-changing structure layer 400 includes a first sleeve 411, a second sleeve 412, a first transparent isolation layer 421, a second transparent isolation layer 422, a transparent encapsulation layer 430, a thermal expansion filler 440, a first elastic filler 451, a second elastic filler 452, a first colored liquid 461, and a second colored liquid 462.

[0056] The first sleeve 411 is disposed within the receiving hole 301, and the second sleeve 412 is disposed between the first sleeve 411 and the inner wall of the receiving hole 301. The height of the first sleeve 411 is less than the height of the second sleeve 412, and the height of the second sleeve 412 is less than the depth of the receiving hole 301. Both the first sleeve 411 and the second sleeve 412 are sealed to the bottom surface of the receiving hole 301. The spacer 300, the first sleeve 411, and the second sleeve 412 can be made of the same material, and the spacer 300, the first sleeve 411, and the second sleeve 412 can be integrally connected. The outer shape and inner cavity of the spacer 300, the first sleeve 411, and the second sleeve 412 are all cylindrical or frustum-shaped.

[0057] A first transparent insulating layer 421 is disposed at one end of the first sleeve 411 near the second substrate 200, and the first transparent insulating layer 421 is sealed to the first sleeve 411. The edge of the first transparent insulating layer 421 can be sealed to the inner wall of the second sleeve 412, and a liquid passage hole 4211 can be formed on the first transparent insulating layer 421 to communicate with the inner cavity of the first sleeve 411 and the interlayer cavity between the first sleeve 411 and the second sleeve 412. In other embodiments, the edge of the first transparent insulating layer 421 can be spaced from the inner wall of the second sleeve 412 to communicate with the inner cavity of the first sleeve 411 and the interlayer cavity between the first sleeve 411 and the second sleeve 412.

[0058] A second transparent isolation layer 422 is disposed at one end of the second sleeve 412 near the second substrate 200, and the second transparent isolation layer 422 is sealed to the second sleeve 412. The edge of the second transparent isolation layer 422 can be sealed to the inner wall of the receiving hole 301, and a liquid passage hole 4211 can be formed on the second transparent isolation layer 422 to communicate with the interlayer cavity between the first sleeve 411 and the second sleeve 412 and the interlayer cavity between the second sleeve 412 and the inner wall of the receiving hole 301. In other embodiments, the edge of the second transparent isolation layer 422 can form a gap with the inner wall of the receiving hole 301, so that the interlayer cavity between the first sleeve 411 and the second sleeve 412 communicates with the interlayer cavity between the second sleeve 412 and the inner wall of the receiving hole 301.

[0059] A transparent encapsulation layer 430 is disposed at the opening of the receiving hole 301, and the transparent encapsulation layer 430 is sealed to the spacer 300. The surface of the transparent encapsulation layer 430 near the second substrate 200 is flush with the surface of the spacer 300 near the second substrate 200. A thermally expandable filler 440 is filled inside the first sleeve 411, and a first elastic filler 451 is filled in the interlayer cavity between the first sleeve 411 and the second sleeve 412, with a filling height less than or equal to the height of the first sleeve 411. A first colored liquid 461 is filled at least between the first transparent insulating layer 421 and the second transparent insulating layer 422. A second elastic filler 452 is filled between the second sleeve 412 and the inner wall of the receiving hole 301, with a filling height less than or equal to the height of the second sleeve 412. A second colored liquid 462 is filled at least between the second transparent insulating layer 422 and the transparent encapsulation layer 430.

[0060] A third transparent isolation layer 423 may be disposed on the side of the transparent encapsulation layer 430 near the first substrate 100, and the second colored liquid 462 is filled at least between the second transparent isolation layer 422 and the third transparent isolation layer 423. The first transparent isolation layer 421, the second transparent isolation layer 422 and the third transparent isolation layer 423 may be made of plastic with a certain degree of elasticity, such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP) etc., and the transparent isolation layer can elastically deform when squeezed.

[0061] The first elastic filler 451 and the second elastic filler 452 are made of low-hardness porous silicone. The hardness of the second elastic filler 452 is less than that of the first elastic filler 451, and the hardness of the first elastic filler 451 is less than that of the transparent encapsulation layer 430. The Shore hardness of the second elastic filler 452 is 0 to 5, and the Shore hardness of the first elastic filler 451 is 5 to 10.

[0062] The second colored liquid 462 is black, the first colored liquid 461 is cyan, and the thermally expanding filler 440 is magenta. In the first state, the first transparent insulating layer 421 and the second transparent insulating layer 422 are not compressed. The second colored liquid 462 blocks the first colored liquid 461 and the thermally expanding filler 440, the color-changing structural layer 400 appears black, and the color-changing structural layer 400 is capable of absorbing light.

[0063] In the second state, when the display panel 10 generates heat or the ambient temperature rises, the thermal expansion filler 440 expands, squeezing out the second colored liquid 462 on the side of the thermal expansion filler 440 closest to the second substrate 200. The color-changing structural layer 400 then turns cyan, as... Figure 3 As shown; when the thermal expansion filler 440 continues to heat up and expand, it simultaneously squeezes out the second colored liquid 462 and the first colored liquid 461 on the side of the thermal expansion filler 440 near the second substrate 200, and the color-changing structural layer 400 turns magenta, as shown. Figure 4 As shown.

[0064] The color-changing structural layer 400 is cyan, making the display panel 10 look brighter and with a higher color temperature. The color-changing structural layer 400 is magenta, increasing the proportion of red light in the display panel 10. The overall color temperature of the display panel 10 is reduced, and the display panel 10 is warmer.

[0065] In some embodiments, the thermal expansion filler 440 includes a thermal expansion matrix 441 and a coloring material, wherein the coloring material is uniformly mixed in the thermal expansion matrix 441. The thermal expansion matrix 441 may be made of a liquid or solid material with a large coefficient of volumetric thermal expansion, such as silicone oil, methanol, ethanol, etc.

[0066] Coloring the thermal expansion substrate 441 simplifies the structure of the thermal expansion filler 440 and reduces the manufacturing difficulty of the display panel 10.

[0067] It should be noted that the thermal expansion filler 440 may be made of a thermal expansion substrate 441 and a coloring material, but is not limited thereto. The thermal expansion filler 440 includes a thermal expansion substrate 441 and a third colored liquid layer 442. The third colored liquid layer 442 is located on the side of the thermal expansion substrate 441 near the second substrate 200, and the color of the third colored liquid layer 442 includes magenta. In addition, a transparent insulating layer may be used to separate the thermal expansion substrate 441 and the third colored liquid layer 442 to prevent the thermal expansion substrate 441 and the third colored liquid layer 442 from mixing.

[0068] In some embodiments, the display panel 10 further includes a heating electrode 500 disposed between the spacer 300 and the first substrate 100, or the heating electrode 500 disposed within the first sleeve 411 on the bottom surface of the receiving hole 301.

[0069] By using the heating electrode 500 to heat the thermal expansion filler 440, the thermal expansion and contraction of the thermal expansion filler 440 can be actively controlled, thereby realizing the active adjustment of the color temperature of the display panel 10.

[0070] Example 2

[0071] The main difference between Example 2 and Example 1 is that the structure of the color-changing structural layer 400 is different.

[0072] See Figures 5 to 7 As shown, the color-changing structure layer 400 includes a first transparent insulating layer 421, a first transparent electrode layer 471, a transparent encapsulation layer 430, an electrophoretic solution 481, and colored charged particles. The transparent encapsulation layer 430 is disposed at the opening of the receiving hole 301, and the transparent encapsulation layer 430 is sealed to the spacer 300. The surface of the transparent encapsulation layer 430 near the second substrate 200 is flush with the surface of the spacer 300 near the second substrate 200.

[0073] A first transparent electrode layer 471 is disposed on the side of the transparent encapsulation layer 430 near the first substrate 100, and a first transparent isolation layer 421 is disposed on the side of the first transparent electrode layer 471 near the first substrate 100. Electrophoretic solution 481 is filled in the receiving hole 301, and colored charged particles are disposed in the electrophoretic solution 481.

[0074] The color-changing structure layer 400 may further include a second transparent insulating layer 422 and a second transparent electrode layer 472. The second transparent insulating layer 422 may be disposed between the transparent encapsulation layer 430 and the first transparent electrode layer 471, thereby providing better insulation protection for the first transparent electrode layer 471. The second transparent electrode layer 472 may be disposed on the bottom surface of the receiving hole 301 or between the spacer 300 and the first substrate 100. Transparent insulating layers may be disposed on both sides of the second transparent electrode layer 472 for insulation protection. The first transparent electrode layer 471 and the second transparent electrode layer 472 may be made of transparent conductive materials such as indium tin oxide (ITO).

[0075] Colored charged particles are distributed in the electrophoretic solution 481. The first transparent electrode layer 471 is positively or negatively charged and adsorbs the colored charged particles. The colored charged particles can reflect light and are used to adjust the color temperature of the display panel 10.

[0076] In some embodiments, the colored charged particles include cyan charged particles 482 and magenta charged particles 483, which have different electrical charges; cyan charged particles 482 are positively charged, and magenta charged particles 483 are negatively charged. In other embodiments, cyan charged particles 482 may also be negatively charged, and magenta charged particles 483 may also be positively charged. Furthermore, the electrophoretic solution 481 also contains uncharged yellow particles 484.

[0077] When the first transparent electrode layer 471 is uncharged, or the voltage between the first transparent electrode layer 471 and the second transparent electrode layer 472 is 0, the cyan charged particles 482, magenta charged particles 483 and yellow particles 484 are uniformly dispersed in the electrophoretic solution 481. Only a small amount of light from the cyan charged particles 482, magenta charged particles 483 and yellow particles 484 is reflected out of the spacer 300, and the small amount of light reflected out is a mixture of cyan light, magenta light and yellow light. The mixed light is white light and does not affect the color temperature of the display panel 10.

[0078] When the first transparent electrode layer 471 is negatively charged, or when the voltage of the first transparent electrode layer 471 is less than the voltage of the second transparent electrode layer 472, positively charged cyan particles 482 are attracted to the area below the first transparent electrode layer 471. The color-changing structure layer 400 reflects cyan light, making the display panel 10 appear brighter and with a higher color temperature. Figure 6 As shown.

[0079] When the first transparent electrode layer 471 is positively charged, or the voltage of the first transparent electrode layer 471 is greater than the voltage of the second transparent electrode layer 472, negatively charged magenta particles 483 are adsorbed below the first transparent electrode layer 471. The color-changing structure layer 400 reflects magenta light, increasing the proportion of red light in the display panel 10. The color temperature of the entire display panel 10 decreases, and the display panel 10 becomes warmer. Figure 7 As shown.

[0080] Example 3

[0081] The main difference between Example 3 and Example 1 is that the structure of the color-changing structural layer 400 is different.

[0082] See Figure 8 As shown, the color-changing structure layer 400 includes a first transparent electrode layer 471, an electrochromic layer 490, and a second transparent electrode layer 472, with the electrochromic layer 490 disposed between the first and second transparent electrode layers 471 and 472. In a first state, the pressure difference between the first and second transparent electrode layers 471 and 472 is zero, and the electrochromic layer 490 is transparent. In a second state, the pressure difference between the first and second transparent electrode layers 471 and 472 is greater than zero, and the electrochromic layer 490 reflects colored light for adjusting color temperature.

[0083] This application uses a color-changing structural layer 400 to adjust the color temperature of the display panel 10 by non-reflecting or reflecting colored light, thereby solving the problem of brightness loss associated with color temperature adjustment and improving the display effect of the display panel 10.

[0084] In some embodiments, the color-changing structural layer 400 is at least partially embedded in the spacer 300, for example, the color-changing structural layer 400 is completely embedded in the spacer 300. A receiving hole 301 is formed at the end of the spacer 300 away from the first substrate 100. The color-changing structural layer 400 also includes a transparent encapsulation layer 430, which is disposed at the opening of the receiving hole 301. The surface of the transparent encapsulation layer 430 near the second substrate 200 is flush with the surface of the spacer 300 near the second substrate 200. A first transparent electrode layer 471, an electrochromic layer 490, and a second transparent electrode layer 472 are disposed between the bottom surface of the receiving hole 301 and the transparent encapsulation layer 430. The first transparent electrode layer 471, the second transparent electrode layer 472, and the transparent encapsulation layer 430 are all substantially parallel to the first substrate 100.

[0085] The electrochromic layer 490 includes a first chromatic material and a second chromatic material, which can be layered or partially or completely mixed together. Both the first and second chromatic materials include a transparent state and a colored state. In the colored state, the first chromatic material is cyan, and the first chromatic material includes Prussian blue. The second chromatic material is magenta, and the second chromatic material includes violet, polythiophene copolymer, etc.

[0086] The activation voltages of the first color-changing material and the second color-changing material are different. When the voltage difference between the first transparent electrode layer 471 and the second transparent electrode layer 472 is V1, the first color-changing material is activated and the color-changing structure layer 400 is cyan. When the voltage difference between the first transparent electrode layer 471 and the second transparent electrode layer 472 is V2, the second color-changing material is activated and the color-changing structure layer 400 is magenta.

[0087] Example 4

[0088] See Figure 9 As shown, the display device in this embodiment includes the display panel 10 and backlight module 20 disclosed in Embodiments 1 to 3, with the display panel 10 disposed on the light-emitting side of the backlight module 20.

[0089] In this embodiment, the display device includes a display panel 10. The display panel 10 includes a first substrate 100, a second substrate 200, spacers 300, and a color-changing structural layer 400. The second substrate 200 is disposed on one side of the first substrate 100, and the spacers 300 are disposed between the first substrate 100 and the second substrate 200. The color-changing structural layer 400 is disposed on a portion of the spacers 300, and the color-changing structural layer 400 at least covers a portion of the spacers 300 near the end of the second substrate 200. The color-changing structural layer 400 includes a first state and a second state. In the first state, the color-changing structural layer 400 can absorb or transmit light. In the second state, the color-changing structural layer 400 can reflect colored light for adjusting the color temperature. This application adjusts the color temperature of the display panel 10 by using the color-changing structural layer 400 to adjust the brightness of the red, green, and blue sub-pixels and the mixing ratio of the three colors, without needing to adjust the brightness loss associated with adjusting the color temperature, thus improving the display effect of the display panel 10 and the display device.

[0090] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0091] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0092] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A display panel, comprising a first substrate and a second substrate, the second substrate being disposed on one side of the first substrate, wherein one of the first substrate and the second substrate is an array substrate and the other is an opposing substrate, characterized in that, The display panel also includes: A spacer is disposed between the first substrate and the second substrate; A color-changing structural layer is disposed on at least a portion of the spacer, the color-changing structural layer at least covers a portion of the spacer near one end of the second substrate, the color-changing structural layer includes a first state and a second state, in the first state the color-changing structural layer can absorb light or transmit light, in the second state the color-changing structural layer can reflect colored light for adjusting color temperature; The color-changing structural layer includes a colored liquid and a thermally expandable filler. The colored liquid is controlled to either block or expose the thermally expandable filler, enabling the color-changing structural layer to absorb or reflect colored light; or The color-changing structural layer includes colored charged particles, and electrophoresis controls the dispersion or aggregation of these particles, enabling the color-changing structural layer to transmit or reflect colored light; or The color-changing structural layer includes an electrochromic layer, and the color of the electrochromic layer is controlled so that the color-changing structural layer can transmit or reflect colored light.

2. The display panel according to claim 1, characterized in that, The spacer has a receiving hole at the end away from the first substrate, and the color-changing structural layer is disposed in the receiving hole.

3. The display panel according to claim 2, characterized in that, The color-changing structural layer includes a first sleeve, a second sleeve, a first transparent isolation layer, a second transparent isolation layer, a transparent encapsulation layer, a thermally expanding filler, a first elastic filler, a second elastic filler, a first colored liquid, and a second colored liquid. The first sleeve is disposed inside the receiving hole, and the second sleeve is disposed between the first sleeve and the inner wall of the receiving hole. The height of the first sleeve is less than the height of the second sleeve, and the height of the second sleeve is less than the depth of the receiving hole. Both the first sleeve and the second sleeve are sealed to the bottom surface of the receiving hole. The first transparent isolation layer is disposed at one end of the first sleeve near the second substrate and is sealed to the first sleeve. The second transparent isolation layer is disposed at one end of the second sleeve near the second substrate and is sealed to the second sleeve. The transparent encapsulation layer is disposed at the opening of the receiving hole and is sealed to the spacer. The thermal expansion filler is filled inside the first sleeve. The first elastic filler is filled between the first sleeve and the second sleeve. The first colored liquid is filled at least between the first transparent isolation layer and the second transparent isolation layer. The second elastic filler is filled between the second sleeve and the inner wall of the receiving hole. The second colored liquid is filled at least between the second transparent isolation layer and the transparent encapsulation layer. The second colored liquid is black, the first colored liquid is cyan, and the thermal expansion filler is magenta. In the first state, the second colored liquid blocks the first colored liquid and the thermal expansion filler. In the second state, the thermal expansion filler expands, squeezing the second colored liquid on the side of the thermal expansion filler close to the second substrate, or squeezing the second colored liquid and the first colored liquid on the side of the thermal expansion filler close to the second substrate simultaneously.

4. The display panel according to claim 3, characterized in that, The thermally expandable filler includes a thermally expandable matrix and a coloring material, wherein the coloring material is uniformly mixed in the thermally expandable matrix; or The thermal expansion filler includes a thermal expansion matrix and a third colored liquid layer. The third colored liquid layer is located on the side of the thermal expansion matrix closer to the second substrate, and the color of the third colored liquid layer includes magenta.

5. The display panel according to claim 3, characterized in that, The display panel further includes a heating electrode, which is disposed between the spacer and the first substrate, or the heating electrode is disposed within the first sleeve on the bottom surface of the receiving hole.

6. The display panel according to claim 2, characterized in that, The color-changing structure layer includes a first transparent insulating layer, a first transparent electrode layer, a transparent encapsulation layer, an electrophoretic solution, and colored charged particles. The transparent encapsulation layer is disposed at the opening of the receiving hole and is sealed to the spacer. The first transparent electrode layer is disposed on the side of the transparent encapsulation layer near the first substrate. The first transparent insulating layer is disposed on the side of the first transparent electrode layer near the first substrate. The electrophoretic solution fills the receiving hole, and the colored charged particles are disposed in the electrophoretic solution.

7. The display panel according to claim 6, characterized in that, The colored charged particles include cyan charged particles and magenta charged particles, the cyan charged particles and the magenta charged particles have different charges, and the electrophoretic solution also contains uncharged yellow particles.

8. The display panel according to claim 1, characterized in that, The color-changing structural layer is disposed on the end face of the spacer or is at least partially embedded in the spacer. The color-changing structural layer includes a first transparent electrode layer, an electrochromic layer, and a second transparent electrode layer. The electrochromic layer is disposed between the first transparent electrode layer and the second transparent electrode layer. In the first state, the electrochromic layer is light-transmitting. In the second state, the electrochromic layer is able to reflect colored light for adjusting the color temperature.

9. The display panel according to claim 8, characterized in that, The spacer has a receiving hole at one end away from the first substrate. The color-changing structure layer also includes a transparent encapsulation layer, which is disposed at the opening of the receiving hole and is sealed to the spacer. The first transparent electrode layer, the electrochromic layer, and the second transparent electrode layer are disposed between the bottom surface of the receiving hole and the transparent encapsulation layer. The electrochromic layer includes a first color-changing material and a second color-changing material. In the colored state, the first color-changing material is cyan, and the second color-changing material is magenta. The activation voltages of the first color-changing material and the second color-changing material are different.

10. A display device, characterized in that, include: Backlight module; The display panel as described in any one of claims 1 to 9 is disposed on the light-emitting side of the backlight module.

Images