WO2025035496A1 - 拼接显示面板 - Google Patents

拼接显示面板 Download PDF

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Publication number
WO2025035496A1
WO2025035496A1 PCT/CN2023/115183 CN2023115183W WO2025035496A1 WO 2025035496 A1 WO2025035496 A1 WO 2025035496A1 CN 2023115183 W CN2023115183 W CN 2023115183W WO 2025035496 A1 WO2025035496 A1 WO 2025035496A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
display panel
substrate
panel
compensation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/115183
Other languages
English (en)
French (fr)
Inventor
唐延宗
施佼佼
林智华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Huizhou China Star Optoelectronics Display Co Ltd
Original Assignee
TCL China Star Optoelectronics Technology Co Ltd
Huizhou China Star Optoelectronics Display Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TCL China Star Optoelectronics Technology Co Ltd, Huizhou China Star Optoelectronics Display Co Ltd filed Critical TCL China Star Optoelectronics Technology Co Ltd
Publication of WO2025035496A1 publication Critical patent/WO2025035496A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13336—Combining plural substrates to produce large-area displays, e.g. tiled displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133368—Cells having two substrates with different characteristics, e.g. different thickness or material
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals

Definitions

  • the present application relates to the field of display technology, and in particular to a spliced display panel.
  • the MLED light board is set at the seam between two adjacent LCD panels to cover the seam.
  • the MLED light board is spliced on the light-emitting side or light-incoming side of the LCD panel.
  • the MLED light board is generally set on the light-incoming side of two adjacent LCD panels to eliminate the seam.
  • the embodiments of the present application provide a spliced display panel, which can reduce the risk of light leakage in the spliced area.
  • An embodiment of the present application provides a spliced display panel, comprising:
  • At least two liquid crystal panels two adjacent liquid crystal panels are spliced together, and a seam is formed between the two adjacent liquid crystal panels;
  • a compensation display panel which is arranged on the light incident side of two adjacent liquid crystal panels and blocks the joint;
  • the liquid crystal panel comprises a first substrate, a liquid crystal layer and a second substrate which are stacked in sequence, the first substrate being a light incident side of the liquid crystal panel, a side of the first substrate away from the liquid crystal layer being provided with a groove, and the groove being provided in a non-display area of the liquid crystal panel;
  • the groove of one liquid crystal panel and the groove of the other liquid crystal panel are arranged opposite to each other and connected to form a positioning groove, and the compensation display panel is arranged in the positioning groove.
  • the depth of the groove is between 0.2 mm and 0.4 mm.
  • the distance from the edge of the display area of the liquid crystal panel to the side wall of the adjacent positioning groove is less than or equal to 50 microns, and the distance from the edge of the display area of the liquid crystal panel to the side wall of the compensation display panel is less than or equal to 100 microns.
  • the first substrate includes a first substrate and a thin film transistor structure layer arranged on a side of the first substrate close to the liquid crystal layer, and the groove is arranged on a side of the first substrate away from the liquid crystal layer.
  • the thin film transistor structure layer includes a light shielding layer disposed on the first substrate, and the thin film transistor is disposed on the light shielding layer;
  • the shading layer is arranged in the display area of the liquid crystal panel, and is also arranged on a side of the junction between the non-display area and the display area close to the non-display area. In the orthographic projection direction of the spliced display panel, the shading layer is located at the periphery of the compensation display panel and between the boundary of the compensation display panel and the display area of the liquid crystal panel.
  • the compensation display panel is arranged in the positioning groove by optical glue
  • the refractive index of the optical glue is greater than the refractive index of the first substrate
  • the positioning groove includes a first surface and a second surface connected to both sides of the first surface
  • the first surface is arranged opposite to the display surface of the compensation display panel
  • the optical glue is bonded to the first surface to form a total reflection interface
  • the total reflection interface is located at least on both sides of the first surface.
  • the compensation display panel is arranged in the positioning groove by optical glue
  • the refractive index of the optical glue is smaller than the refractive index of the first substrate
  • the positioning groove includes a first surface and a second surface connected to both sides of the first surface
  • the first surface is arranged opposite to the display surface of the compensation display panel
  • the optical glue and the second surface are bonded to form a total reflection interface.
  • the compensation display panel is arranged in the positioning groove by optical glue, and the positioning groove includes a first surface and a second surface connected to both sides of the first surface, the first surface is arranged opposite to the display surface of the compensation display panel, and a light blocking layer is arranged on the second surface.
  • the liquid crystal panel further includes a transparent frame glue, which is disposed around the periphery of the liquid crystal layer and between the first substrate and the second substrate.
  • the frame glue is located in a non-display area of the liquid crystal panel, and the frame glue overlaps with the groove.
  • the second substrate includes a second substrate and a black matrix layer disposed on a side of the second substrate close to the liquid crystal layer, the black matrix layer covers a display area and a non-display area of the liquid crystal panel, and the compensation display panel includes a base and a pixel device disposed on a side of the base close to the second substrate;
  • the black matrix layer is arranged between the pixel devices.
  • the joint is filled with packaging glue
  • the packaging glue is connected to the frame glue
  • the refractive index of the packaging glue is the same as the refractive index of the frame glue.
  • the spliced display panel further includes a first polarizer and a second polarizer, the first polarizer is arranged on a side of the first substrate away from the liquid crystal layer, an opening is arranged on the first polarizer, the opening overlaps with and is connected to the groove, and the compensation display panel is arranged in the opening;
  • the second polarizer is disposed on a side of the second substrate away from the liquid crystal layer, the second polarizer covers a display area and a non-display area of the liquid crystal panel, and the second polarizer is overlapped with the compensation display panel.
  • the second substrate further includes a color filter layer disposed on a side of the second substrate close to the liquid crystal layer, and the color filter layer is disposed between the black matrix layers.
  • the pixel device includes one of a Mini-LED, a Micro-LED and an OLED device.
  • the spliced display panel of the embodiment of the present application includes at least two liquid crystal panels and at least one compensation display panel, the two adjacent liquid crystal panels are spliced together, and there is a splicing seam between the two adjacent liquid crystal panels; the compensation display panel is arranged on the light incident side of the two adjacent liquid crystal panels and blocks the splicing seam;
  • the liquid crystal panel includes a first substrate, a liquid crystal layer and a second substrate stacked in sequence, the first substrate is the light incident side of the liquid crystal panel, and a groove is arranged on the side of the first substrate away from the liquid crystal layer, and the groove is arranged in the non-display area of the liquid crystal panel; in the two adjacent liquid crystal panels, the groove of one liquid crystal panel and the groove of the other liquid crystal panel are arranged opposite to each other and are spliced and connected to form a positioning groove, and the compensation display panel is arranged in the positioning groove.
  • the splicing display panel of the embodiment of the present application is provided with a positioning groove at the splicing area of the liquid crystal panel, and the compensation display panel is arranged in the positioning groove, thereby avoiding the risk of excessive offset of the compensation display panel due to attachment error, resulting in excessive distance between the compensation display panel and the display area of the liquid crystal panel, that is, the attachment accuracy of the compensation display panel is improved, and the risk of excessive distance between the compensation display panel and the display area of the liquid crystal panel is reduced, thereby reducing the risk of backlight leakage;
  • the compensation display panel is arranged in the positioning groove, and the compensation display panel serves to block part of the large-angle light emitted by the backlight, further reducing the risk of light leakage.
  • FIG1 is a schematic diagram of the structure of a spliced display panel provided in Embodiment 1 of the present application;
  • Fig. 2 is an enlarged view of portion M in Fig. 1;
  • FIG3 is a schematic diagram of the structure of a spliced display panel provided in Embodiment 2 of the present application.
  • FIG4 is an enlarged view of portion N in FIG3 ;
  • FIG5 is a schematic diagram of the structure of a spliced display panel provided in Embodiment 3 of the present application.
  • FIG. 6 is an enlarged view of portion K in FIG. 5 .
  • the directional words used such as “upper” and “lower”, generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while “inside” and “outside” refer to the outline of the device; the terms “first”, “second”, “third”, etc. are used only as markings, and no numerical requirements are imposed or order is established.
  • the present application provides a spliced display panel, which is described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.
  • the present embodiment provides a spliced display panel 100, which includes at least two liquid crystal panels 11 and at least one compensation display panel 12.
  • the liquid crystal panel 11 includes a display area AA and a non-display area NA, and the non-display area NA is located on at least one side of the display area AA.
  • the liquid crystal panel 11 includes a first substrate 111, a liquid crystal layer 112 and a second substrate 113 which are stacked in sequence, and the first substrate 111 is the light incident side of the liquid crystal panel 11.
  • a groove 11a is provided on the side of the first substrate 111 away from the liquid crystal layer 112. The groove 11a is provided in the non-display area NA of the liquid crystal panel 11.
  • the groove 11a of one liquid crystal panel 11 and the groove 11a of the other liquid crystal panel 11 are arranged opposite to each other and spliced and connected to form a positioning groove 10a.
  • the compensation display panel 12 is arranged in the positioning groove 10a.
  • a backlight module needs to be arranged on the light incident side of the liquid crystal panel 11.
  • the backlight module provides a surface light source for the liquid crystal panel 11.
  • the compensation display panel 12 is disposed in the non-display area NA of the liquid crystal panel 11.
  • the portion of the liquid crystal panel 11 that is the non-display area NA can transmit the display image of the compensation display panel 12.
  • the boundary of the LED display panel is at a certain distance from the display area of the liquid crystal panel.
  • the LED display panel is offset due to the attachment error, making the distance too large, the light emitted by the backlight module will pass through the area between the LED display panel and the display area of the liquid crystal panel, causing light leakage.
  • the distance is limited by the attachment accuracy of the LED display panel, and the attachment error of the LED display panel is ⁇ 0.15 mm.
  • the splicing display panel 100 of the embodiment of the present application is provided with a positioning groove 10a at the splicing area of the liquid crystal panel 11, and the compensation display panel 12 is arranged in the positioning groove 10a. Due to the setting of the positioning groove 10a, the attachment of the compensation display panel 12 is more precise, which reduces the risk of excessive distance between the compensation display panel 12 and the display area AA of the liquid crystal panel 11, thereby reducing the risk of light leakage from the backlight module.
  • the compensation display panel 12 since the backlight module is arranged on the side of the first polarizer 151 away from the liquid crystal layer 112, part of the large-angle light emitted by the backlight module will be blocked by the compensation display panel 12.
  • the compensation display panel 12 is arranged in the positioning groove 10a, and the compensation display panel 12 plays a role in blocking more large-angle light emitted by the backlight, further reducing the risk of backlight leakage.
  • the compensation display panel 12 can block light with an exit angle of more than 160 degrees, and when the compensation display panel 12 is arranged in the positioning groove 10a, since the compensation display panel 12 moves a certain distance in the direction of light emission, the compensation display panel 12 can block light with an exit angle of more than 150 degrees, and then the compensation display panel 12 can block more large-angle light, thereby further reducing the risk of backlight leakage.
  • the depth of the groove 11a is between 0.15 mm and 0.4 mm.
  • the depth of the groove 11a can be 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, 0.30 mm, 0.31 mm, 0.32 mm, 0.33 mm, 0.34 mm, 0.35 mm, 0.36 mm, 0.37 mm, 0.38 mm, 0.39 mm or 0.40 mm.
  • the depth of the groove 11a is too deep, the supporting performance of the first substrate 1a1 will be reduced, and if the depth of the groove 11a is too shallow, the compensation display panel 12 will not be able to be arranged in the groove 11a, and the effect of precise fitting cannot be achieved. Therefore, the selection of the above-mentioned depth of the groove 11a can ensure the supporting performance of the first substrate 1a1, and enable the compensation display panel 12 to be accurately attached to the groove 11a.
  • a photolithography process is used to form the groove 11a on the first substrate 1a1.
  • the distance from the edge of the display area AA of the liquid crystal panel 11 to the side wall of the adjacent positioning groove 11a is less than or equal to 50 microns, for example, it can be 0 microns, 5 microns, 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35 microns, 40 microns, 45 microns or 50 microns.
  • the distance from the edge of the display area AA of the liquid crystal panel 11 to the side wall of the compensation display panel 12 is less than or equal to 100 microns, for example, it can be 0 microns, 5 microns, 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, 55 microns, 60 microns, 65 microns, 70 microns, 75 microns, 80 microns, 85 microns, 90 microns, 95 microns or 100 microns.
  • the material of the first substrate 1a1 includes but is not limited to one of glass, sapphire and silicon.
  • the liquid crystal panel 11 may be a conventional panel, a COA (color filter layer on array substrate) panel, or a BOA (black matrix on array substrate) panel.
  • This embodiment is described by taking the liquid crystal panel 11 as a conventional panel as an example, that is, the first substrate 111 is an array substrate, and the second substrate is a color filter substrate.
  • the compensation display panel 12 may be a Mini-LED panel, a Micro-LED panel, an OLED panel or a QLED panel, etc.
  • the first substrate 111 includes a first substrate 1a1 and a thin film transistor structure layer 1a2 disposed on a side of the first substrate 1a1 close to the liquid crystal layer 112.
  • the groove 11a is disposed on a side of the first substrate 1a1 away from the liquid crystal layer 112.
  • the groove 11a can be formed by etching the first substrate 1a1 first, and then the thin film transistor structure layer is prepared, so that the groove 11a formed has high precision.
  • the groove 11a can be formed by grinding the first substrate 1a1 after the liquid crystal panel is formed.
  • the thin film transistor structure layer 1a2 includes a thin film transistor and a pixel electrode layer, and the pixel electrode layer is disposed on the thin film transistor and connected to the thin film transistor.
  • the thin film transistor structure layer 1a2 includes a light shielding layer 1a3 disposed on the first substrate 1a1, and the thin film transistor is disposed on the light shielding layer 1a3.
  • the light shielding layer 1a3 shields the thin film transistor to prevent light from irradiating the thin film transistor.
  • the light shielding layer 1a3 is not only arranged in the display area AA, but also arranged at the junction of the non-display area NA and the display area AA on one side close to the non-display area NA. In the orthographic projection direction of the spliced display panel 100, the light shielding layer 1a3 is located at the periphery of the compensation display panel 12 and between the boundary of the compensation display panel 12 and the display area AA of the liquid crystal panel 11. Such a setting can further reduce the risk of light leakage on the one hand, and reduce the light crosstalk between the liquid crystal panel 11 and the compensation display panel 12 on the other hand, and also saves process.
  • the compensation display panel 12 is arranged in the positioning groove 10a through an optical glue 13.
  • the refractive index of the optical glue 13 is greater than the refractive index of the first substrate 1a1.
  • the positioning groove 10a includes a first surface 101 and a second surface 102 connected to both sides of the first surface 101.
  • the first surface 101 is arranged opposite to the display surface of the compensation display panel 12.
  • the optical glue 13 is attached to the first surface 101 to form a total reflection interface fs.
  • the total reflection interface fs is at least located on both sides of the first surface 101.
  • the first surface 101 can be used as a total reflection interface fs.
  • the light of the backlight module is radiated to the first surface 101 through the optical adhesive 13, reflection occurs, thereby reducing the risk of light leakage.
  • the viewing angle of the compensation display panel 12 is greater than that of the liquid crystal panel 11.
  • the total reflection interface fs disposed on both sides of the first surface 101 can also reflect the large-angle light of the compensation display panel 12, thereby reducing the effect of the light of the compensation display panel 12 interfering with the liquid crystal panel 11.
  • the liquid crystal panel 11 further includes a transparent sealant 114, which is disposed around the periphery of the liquid crystal layer 112 and between the first substrate 111 and the second substrate 113.
  • the sealant 114 is located in the non-display area NA of the liquid crystal panel 11. The sealant 114 overlaps the groove 11a.
  • the frame glue 114 and the groove 11a are overlapped.
  • the portion of the first substrate 1a1 corresponding to the frame glue 114 is thinned, thereby improving light transmittance and thus improving the curing effect of the frame glue; on the other hand, a narrow frame can be achieved.
  • the second substrate 113 includes a second substrate 1b1 and a black matrix layer 1b2 disposed on a side of the second substrate 1b1 close to the liquid crystal layer 112.
  • the black matrix layer 1b2 covers the display area AA and the non-display area NA of the liquid crystal panel 11.
  • the compensation display panel 12 includes a base 121 and a pixel device 122 disposed on a side of the base 121 close to the second substrate 113.
  • the black matrix layer 1 b 2 is disposed between the pixel devices 122 .
  • the black matrix layer 1b2 is used to cover the display area AA and the non-display area NA, which can avoid the pixel light crosstalk of the liquid crystal panel 11 and the compensation display panel 12 at one time, and make the contrast of the liquid crystal panel 11 and the compensation display panel 12 tend to be consistent, and save process steps.
  • the black matrix layer 1b2 is set in the non-display area NA to further reduce the risk of light leakage.
  • the compensation display panel 12 further includes an encapsulation layer, which encapsulates and covers the second substrate 1b1 and the pixel device 122.
  • the encapsulation layer is connected with the optical glue 13.
  • the pixel device 122 includes but is not limited to one of Mini-LED, Micro-LED and OLED devices.
  • the second substrate 113 further includes a color filter layer 1b3 disposed on a side of the second substrate 1b1 close to the liquid crystal layer 112.
  • the color filter layer 1a3 is disposed between the black matrix layers 1b2.
  • the gap pf is filled with a packaging glue 14, and the packaging glue 14 is connected to the frame glue 114.
  • the refractive index of the packaging glue 14 is the same as the refractive index of the frame glue 114.
  • the setting of the encapsulation glue 14 improves the encapsulation effect of the spliced display panel 100 and also improves the stability of the connection between the liquid crystal panels 11.
  • the refractive index of the encapsulation glue 14 and the frame glue 114 is consistent, so that the optical path trend of the light emitted by the compensation display panel 12 tends to be consistent, thereby improving the display effect.
  • the spliced display panel 100 further includes a first polarizer 151 and a second polarizer 152.
  • the first polarizer 151 is disposed on a side of the first substrate 111 away from the liquid crystal layer 112.
  • An opening 15a is disposed on the first polarizer 151.
  • the opening 15a overlaps with and is connected to the groove 11a.
  • the compensation display panel 12 is disposed in the opening 15a.
  • the boundary of the opening 15a is located outside the groove 11a or coincides with the boundary of the groove 11a, so that the compensation display panel 12 is arranged in the opening 15a and the groove 11a, thereby improving the flatness.
  • the second polarizer 152 is disposed on a side of the second substrate 113 away from the liquid crystal layer 112.
  • the second polarizer 152 covers the display area AA and the non-display area NA of the liquid crystal panel 11.
  • the second polarizer 152 is overlapped with the compensation display panel 12.
  • the luminance of the compensation display panel 12 is higher than that of the liquid crystal panel 11. Therefore, by using the second polarizer 152 to cover the display area of the compensation display panel 12, the difference in luminance between the compensation display panel 12 and the liquid crystal panel 11 can be reduced, thereby improving the overall display effect of the spliced display panel 100.
  • a second embodiment provides a spliced display panel 100, which includes at least two liquid crystal panels 11 and at least one compensation display panel 12.
  • the liquid crystal panel 11 includes a display area AA and a non-display area NA, and the non-display area NA is located at least on one side of the display area AA.
  • the liquid crystal panel 11 includes a first substrate 111, a liquid crystal layer 112 and a second substrate 113 which are stacked in sequence, and the first substrate 111 is the light incident side of the liquid crystal panel 11.
  • a groove 11a is provided on the side of the first substrate 111 away from the liquid crystal layer 112. The groove 11a is provided in the non-display area NA of the liquid crystal panel 11.
  • the groove 11a of one liquid crystal panel 11 and the groove 11a of the other liquid crystal panel 11 are arranged opposite to each other and spliced and connected to form a positioning groove 10a.
  • the compensation display panel 12 is arranged in the positioning groove 10a.
  • a backlight module needs to be arranged on the light incident side of the liquid crystal panel 11.
  • the backlight module provides a surface light source for the liquid crystal panel 11.
  • the boundary of the LED display panel is at a certain distance from the display area of the liquid crystal panel.
  • the LED display panel is offset due to attachment error, making the distance too large, the light emitted by the backlight module will pass through the area between the LED display panel and the display area of the liquid crystal panel, causing light leakage.
  • the distance is limited by the attachment accuracy of the LED display panel.
  • the splicing display panel 100 of the embodiment of the present application is provided with a positioning groove 10a at the splicing area of the liquid crystal panel 11, and the compensation display panel 12 is arranged in the positioning groove 10a. Due to the setting of the positioning groove 10a, the attachment of the compensation display panel 12 is more precise, which reduces the risk of excessive distance between the compensation display panel 12 and the display area AA of the liquid crystal panel 11, thereby reducing the risk of light leakage from the backlight module.
  • the compensation display panel 12 since the backlight module is arranged on the side of the first polarizer 151 away from the liquid crystal layer 112, part of the large-angle light emitted by the backlight module will be blocked by the compensation display panel 12.
  • the compensation display panel 12 is arranged in the positioning groove 10a, and the compensation display panel 12 plays a role in blocking more large-angle light emitted by the backlight, further reducing the risk of backlight leakage.
  • the compensation display panel 12 can block light with an exit angle of more than 160 degrees, and when the compensation display panel 12 is arranged in the positioning groove 10a, since the compensation display panel 12 moves a certain distance in the direction of light emission, the compensation display panel 12 can block light with an exit angle of more than 150 degrees, and then the compensation display panel 12 can block more large-angle light, thereby further reducing the risk of backlight leakage.
  • the compensation display panel 12 is disposed in the positioning groove 10a through the optical adhesive 13.
  • the positioning groove 10a includes a first surface 101 and a second surface 102 connected to both sides of the first surface 101.
  • the first surface 101 is disposed opposite to the display surface of the compensation display panel 12.
  • the difference between the second embodiment and the above embodiments is that the refractive index of the optical adhesive 13 is smaller than the refractive index of the first substrate 1a1.
  • the optical adhesive 13 and the second surface 102 are bonded to form a total reflection interface fs.
  • the second surface 102 can serve as a total reflection interface fs. When the light from the backlight module is radiated to the second surface 102 through the first substrate 1a1, reflection occurs, thereby reducing the risk of light leakage and the risk of light interference compensating the display panel 12.
  • the reflected light is radiated to the liquid crystal layer 112, thereby improving the utilization rate of the backlight.
  • the reflected light can increase the brightness of the side of the liquid crystal panel 11 away from the light source, making the backlight output more uniform.
  • a spliced display panel 100 is provided in a third embodiment, which includes at least two liquid crystal panels 11 and at least one compensation display panel 12.
  • the liquid crystal panel 11 includes a display area AA and a non-display area NA, and the non-display area NA is located at least on one side of the display area AA.
  • the liquid crystal panel 11 includes a first substrate 111, a liquid crystal layer 112 and a second substrate 113 which are stacked in sequence, and the first substrate 111 is the light incident side of the liquid crystal panel 11.
  • a groove 11a is provided on the side of the first substrate 111 away from the liquid crystal layer 112. The groove 11a is provided in the non-display area NA of the liquid crystal panel 11.
  • the groove 11a of one liquid crystal panel 11 and the groove 11a of the other liquid crystal panel 11 are arranged opposite to each other and spliced and connected to form a positioning groove 10a.
  • the compensation display panel 12 is arranged in the positioning groove 10a.
  • a backlight module needs to be arranged on the light incident side of the liquid crystal panel 11.
  • the backlight module provides a surface light source for the liquid crystal panel 11.
  • the boundary of the LED display panel is at a certain distance from the display area of the liquid crystal panel.
  • the LED display panel is offset due to attachment error, making the distance too large, the light emitted by the backlight module will pass through the area between the LED display panel and the display area of the liquid crystal panel, causing light leakage.
  • the distance is limited by the attachment accuracy of the LED display panel.
  • the splicing display panel 100 of the embodiment of the present application is provided with a positioning groove 10a at the splicing area of the liquid crystal panel 11, and the compensation display panel 12 is arranged in the positioning groove 10a. Due to the setting of the positioning groove 10a, the attachment of the compensation display panel 12 is more precise, which reduces the risk of excessive distance between the compensation display panel 12 and the display area AA of the liquid crystal panel 11, thereby reducing the risk of light leakage from the backlight module.
  • the compensation display panel 12 since the backlight module is arranged on the side of the first polarizer 151 away from the liquid crystal layer 112, part of the large-angle light emitted by the backlight module will be blocked by the compensation display panel 12.
  • the compensation display panel 12 is arranged in the positioning groove 10a, and the compensation display panel 12 plays a role in blocking more large-angle light emitted by the backlight, further reducing the risk of backlight leakage.
  • the compensation display panel 12 can block light with an exit angle of more than 160 degrees, and when the compensation display panel 12 is arranged in the positioning groove 10a, since the compensation display panel 12 moves a certain distance in the direction of light emission, the compensation display panel 12 can block light with an exit angle of more than 150 degrees, and then the compensation display panel 12 can block more large-angle light, thereby further reducing the risk of backlight leakage.
  • the compensation display panel 12 is disposed in the positioning groove 10a through the optical adhesive 13.
  • the positioning groove 10a includes a first surface 101 and a second surface 102 connected to both sides of the first surface 101.
  • the first surface 101 is disposed opposite to the display surface of the compensation display panel 12.
  • a light blocking layer 16 is disposed on the second surface 102 .
  • the refractive index relationship between the optical adhesive 13 and the first substrate 1a1 in the third embodiment is not restricted.
  • the spliced display panel 100 of the third embodiment has a light blocking layer 16 on the second surface 102 to block the light radiated from the backlight module to the groove 11a, thereby reducing the risk of light leakage, reducing the risk of the backlight light interfering with the compensation display panel 12 and reducing the risk of the compensation display panel 12 interfering with the liquid crystal panel 11.

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Abstract

公开了一种拼接显示面板(100)，补偿显示面板(12)设置在相邻两个液晶面板(11)的入光侧，且遮挡拼缝(pf)；液晶面板(11)的第一基板(111)远离液晶层(112)的一侧设置有凹槽(11a)，凹槽(11a)设置在液晶面板(11)的非显示区(NA)；在相邻的两个液晶面板(11)中，一液晶面板(11)的凹槽(11a)和另一液晶面板(11)的凹槽(11a)相对设置且拼接连通形成一定位槽(10a)，补偿显示面板(12)设置在定位槽(10a)内。

Description

拼接显示面板 技术领域
本申请涉及显示技术领域，具体涉及一种拼接显示面板。
 背景技术
在液晶面板拼接MLED（Mini-LED/Micro-LED）灯板的相关技术中，MLED灯板设置在相邻两个液晶面板的拼缝处以遮挡拼缝。通常MLED灯板拼接在液晶面板的出光侧或入光侧。考虑到平整度的要求，一般会将MLED灯板设置在相邻两个液晶面板的入光侧，以消除拼缝。
但是，由于MLED灯板贴附公差的问题，导致MLED灯板和液晶面板的显示区之间具有较大的漏光区，使得位于液晶面板入光侧的背光模组发出的部分光线可通过漏光区射出，特别在侧视时，漏光更加明显。
 发明概述
本申请实施例提供一种拼接显示面板，可以降低拼接区域漏光的风险。
本申请实施例提供一种拼接显示面板，其包括：
至少两个液晶面板，相邻两个所述液晶面板拼接设置，相邻两个所述液晶面板之间具有拼缝；以及
补偿显示面板，所述补偿显示面板设置在相邻两个所述液晶面板的入光侧，且遮挡所述拼缝；
所述液晶面板包括依次层叠设置的第一基板、液晶层和第二基板，所述第一基板为所述液晶面板的入光侧，所述第一基板远离所述液晶层的一侧设置有凹槽，所述凹槽设置在所述液晶面板的非显示区；
在相邻的两个所述液晶面板中，一所述液晶面板的所述凹槽和另一所述液晶面板的所述凹槽相对设置且拼接连通形成一定位槽，所述补偿显示面板设置在所述定位槽内。
可选的，在本申请的一些实施例中，所述凹槽的深度介于0.2毫米至0.4毫米之间。
可选的，在本申请的一些实施例中，所述液晶面板的显示区的边缘到邻近的所述定位槽的侧壁的距离小于或等于50微米，所述液晶面板的显示区的边缘到所述补偿显示面板的侧壁的距离小于或等于100微米。
可选的，在本申请的一些实施例中，所述第一基板包括第一衬底和设置在所述第一衬底靠近所述液晶层一侧的薄膜晶体管结构层，所述凹槽设置在所述第一衬底远离所述液晶层的一侧。
可选的，在本申请的一些实施例中，所述薄膜晶体管结构层包括设置在所述第一衬底上的遮光层，薄膜晶体管设置在遮光层上；
所述遮光层设置在所述液晶面板的显示区，还设置在所述非显示区和所述显示区的交界处靠近非显示区的一侧，在所述拼接显示面板的正投影方向上，所述遮光层位于所述补偿显示面板的外周且位于所述补偿显示面板的边界和所述液晶面板的所述显示区之间。
可选的，在本申请的一些实施例中，所述补偿显示面板通过光学胶设置在所述定位槽内，所述光学胶的折射率大于所述第一衬底的折射率，所述定位槽包括第一表面和连接于所述第一表面两侧的第二表面，所述第一表面与所述补偿显示面板的显示面相对设置，所述光学胶与所述第一表面贴合形成一全反射界面，所述全反射界面至少位于所述第一表面的两侧区域。
可选的，在本申请的一些实施例中，所述补偿显示面板通过光学胶设置在所述定位槽内，所述光学胶的折射率小于所述第一衬底的折射率，所述定位槽包括第一表面和连接于所述第一表面两侧的第二表面，所述第一表面与所述补偿显示面板的显示面相对设置，所述光学胶与所述第二表面贴合形成一全反射界面。
可选的，在本申请的一些实施例中，所述补偿显示面板通过光学胶设置在所述定位槽内，所述定位槽包括第一表面和连接于所述第一表面两侧的第二表面，所述第一表面与所述补偿显示面板的显示面相对设置，所述第二表面上设置有挡光层。
可选的，在本申请的一些实施例中，所述液晶面板还包括透明的框胶，所述框胶围设在所述液晶层的外周且设置在所述第一基板和所述第二基板之间，所述框胶位于所述液晶面板的非显示区，所述框胶与所述凹槽重叠设置。
可选的，在本申请的一些实施例中，所述第二基板包括第二衬底和设置在所述第二衬底靠近所述液晶层一侧的黑色矩阵层，所述黑色矩阵层覆盖所述液晶面板的显示区和非显示区，所述补偿显示面板包括基底和设置在所述基底靠近所述第二基板一侧的像素器件；
在所述拼接显示面板的正投影方向上，所述黑色矩阵层设置在所述像素器件之间。
可选的，在本申请的一些实施例中，所述拼缝内填充有封装胶，所述封装胶连接于所述框胶，所述封装胶的折射率与所述框胶的折射率相同。
可选的，在本申请的一些实施例中，所述拼接显示面板还包括第一偏光片和第二偏光片，所述第一偏光片设置在所述第一基板远离所述液晶层的一侧，所述第一偏光片上设置有开口，所述开口与所述凹槽重叠且连通设置，所述补偿显示面板设置在所述开口内；
所述第二偏光片设置在所述第二基板远离所述液晶层的一侧，所述第二偏光片覆盖所述液晶面板的显示区和非显示区，所述第二偏光片与所述补偿显示面板重叠设置。
可选的，在本申请的一些实施例中，所述第二基板还包括设置在所述第二衬底靠近所述液晶层一侧的彩膜层，所述彩膜层设置在所述黑色矩阵层之间。
可选的，在本申请的一些实施例中，所述像素器件包括Mini-LED、Micro-LED和OLED器件中的一种。
有益效果
本申请实施例的拼接显示面板包括至少两个液晶面板和至少一个补偿显示面板，相邻两个液晶面板拼接设置，相邻两个液晶面板之间具有拼缝；补偿显示面板设置在相邻两个液晶面板的入光侧，且遮挡所述拼缝；液晶面板包括依次层叠设置的第一基板、液晶层和第二基板，第一基板为液晶面板的入光侧，第一基板远离液晶层的一侧设置有凹槽，凹槽设置在液晶面板的非显示区；在相邻的两个液晶面板中，一液晶面板的凹槽和另一液晶面板的凹槽相对设置且拼接连通形成一定位槽，补偿显示面板设置在定位槽内。
本申请实施例的拼接显示面板在液晶面板的拼接区域处设置定位槽，将补偿显示面板设置在定位槽内，避免了因贴附误差导致补偿显示面板偏移过大，致使补偿显示面板和液晶面板的显示区距离过大的风险，即提高了补偿显示面板的贴附精度，降低了补偿显示面板与液晶面板的显示区之间距离过大的风险，从而降低了背光漏光的风险；另外，补偿显示面板设置在定位槽内，补偿显示面板起到阻挡背光射出的部分大角度光线，进一步降低了漏光的风险。
 附图说明
图1是本申请实施例一提供的拼接显示面板的结构示意图；
图2是图1中M部分的放大图；
图3是本申请实施例二提供的拼接显示面板的结构示意图；
图4是图3中N部分的放大图；
图5是本申请实施例三提供的拼接显示面板的结构示意图；
图6是图5中K部分的放大图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向；而“内”和“外”则是针对装置的轮廓而言的；用语“第一”、“第二”、“第三”等仅仅作为标示使用，并没有强加数字要求或建立顺序。
本申请实施例提供一种拼接显示面板，下文进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
实施例一、
请参照图1和图2，本申请实施例提供一种拼接显示面板100，其包括至少两个液晶面板11和至少一个补偿显示面板12。液晶面板11包括显示区AA和非显示区NA，非显示区NA位于显示区AA至少一侧。
相邻两个液晶面板11拼接设置。相邻两个液晶面板11之间具有拼缝pf。补偿显示面板12设置在相邻两个液晶面板11的入光侧，且遮挡拼缝pf。液晶面板11包括依次层叠设置的第一基板111、液晶层112和第二基板113，第一基板111为液晶面板11的入光侧。第一基板111远离液晶层112的一侧设置有凹槽11a。凹槽11a设置在液晶面板11的非显示区NA。在相邻的两个液晶面板11中，一液晶面板11的凹槽11a和另一液晶面板11的凹槽11a相对设置且拼接连通形成一定位槽10a。补偿显示面板12设置在定位槽10a内。
需要说明的是，液晶面板11要实现显示功能，则需要在液晶面板11的入光侧设置背光模组。背光模组为液晶面板11提供面光源。
补偿显示面板12设置在液晶面板11的非显示区NA。液晶面板11为非显示区NA的部分可透过补偿显示面板12的显示画面。
其中，在相关的技术中，在LED（发光二极管）显示面板贴附在相邻两个液晶面板的拼接处时，LED显示面板的边界距离液晶面板的显示区具有一定的距离，当因贴附误差导致LED显示面板偏移，使得该距离过大时，背光模组发出的光线会透过LED显示面板和液晶面板的显示区之间的区域，导致漏光。其中，该距离受限于LED显示面板的贴附精度，其中LED显示面板的贴附误差为±0.15毫米。
本申请实施例的拼接显示面板100在液晶面板11的拼接区域处设置定位槽10a，补偿显示面板12设置在定位槽10a内，由于定位槽10a的设置使得补偿显示面板12的贴附更为精准，降低了补偿显示面板12与液晶面板11的显示区AA之间距离过大的风险，从而降低了背光模组漏光的风险。
另外，由于背光模组设置在第一偏光片151远离液晶层112的一侧，因此背光模组发出的部分大角度光线会被补偿显示面板12所阻挡，相较于补偿显示面板12直接设置在平整的阵列基板侧，补偿显示面板12设置在定位槽10a内，补偿显示面板12起到阻挡背光射出的更多大角度光线，进一步降低了背光漏光的风险。比如，若补偿显示面板12设置在平整的阵列基板侧时，补偿显示面板12可以阻挡出射角度为160度以上的光线，而当补偿显示面板12设置在定位槽10a内时，由于补偿显示面板12往出光的方向移动了一定的距离，使得补偿显示面板12可以阻挡出射角度为150度以上的光线，进而补偿显示面板12可以阻挡更多的大角度光线，从而进一步减低了背光漏光的风险。
可选的，在一实施例中，凹槽11a的深度介于0.15毫米至0.4毫米之间。比如，凹槽11a的深度可以是0.15毫米、0.16毫米、0.17毫米、0.18毫米、0.19毫米、0.2毫米、0.21毫米、0.22毫米、0.23毫米、0.24毫米、0.25毫米、0.26毫米、0.27毫米、0.28毫米、0.29毫米、0.30毫米、0.31毫米、0.32毫米、0.33毫米、0.34毫米、0.35毫米、0.36毫米、0.37毫米、0.38毫米、0.39毫米或0.40毫米。
需要理解的是，凹槽11a的深度过深会导致第一衬底1a1的支撑性能降低，凹槽11a的深度过浅会导致补偿显示面板12不足以设置在凹槽11a内，达不到精准贴合的效果。因此凹槽11a上述深度的选取即可保证第一衬底1a1的支撑性，又使得补偿显示面板12可以精准贴附在凹槽11a内。
可选的，采用光刻制程工艺在第一衬底1a1上形成凹槽11a。
可选的，液晶面板11的显示区AA的边缘到邻近定位槽11a的侧壁的距离小于或等于50微米，比如可以是0微米、5微米、10微米、15微米、20微米、25微米、30微米、35微米、40微米、45微米或50微米。
液晶面板11的显示区AA的边缘到补偿显示面板12的侧壁的距离小于或等于100微米，比如可以是0微米、5微米、10微米、15微米、20微米、25微米、30微米、35微米、40微米、45微米、50微米、55微米、60微米、65微米、70微米、75微米、80微米、85微米、90微米、95微米或100微米。
可选的，第一衬底1a1的材质包括但不限于玻璃、蓝宝石和硅中的一种。
可选的，液晶面板11可以是常规面板、COA（滤光层在阵列基板）面板和BOA（黑色矩阵在阵列基板）面板。本实施例以液晶面板11为常规面板为例进行说明，也即第一基板111为阵列基板，第二基板为彩膜基板。
可选的，补偿显示面板12可以是Mini-LED面板、Micro-LED面板、OLED面板或QLED面板等。
可选的，在一实施例中，第一基板111包括第一衬底1a1和设置在第一衬底1a1靠近液晶层112一侧的薄膜晶体管结构层1a2。凹槽11a设置在第一衬底1a1远离液晶层112的一侧。
可选的，凹槽11a可先在第一衬底1a1通过刻蚀形成，随后再进行薄膜晶体管结构层的制备，这样形成的凹槽11a精度较高。也可以是在液晶面板成盒后，在对第一衬底1a1采用研磨的方式形成凹槽11a。
可选的，薄膜晶体管结构层1a2包括薄膜晶体管和像素电极层，像素电极层设置在薄膜晶体管上且连接于薄膜晶体管。
在一些实施例中，薄膜晶体管结构层1a2包括设置在第一衬底1a1上的遮光层1a3，薄膜晶体管设置在遮光层1a3上。遮光层1a3遮挡薄膜晶体管，避免光线照射薄膜晶体管。
另外，遮光层1a3不仅设置在显示区AA，还设置在非显示区NA和显示区AA的交界处靠近非显示区NA的一侧。在拼接显示面板100的正投影方向上，遮光层1a3位于补偿显示面板12的外周且位于补偿显示面板12的边界和液晶面板11的显示区AA之间。这样的设置一方面可以进一步降低漏光的风险，另一方面可以降低液晶面板11和补偿显示面板12的光线串扰，另外还节省工艺。
可选的，补偿显示面板12通过光学胶13设置在定位槽10a内。光学胶13的折射率大于第一衬底1a1的折射率。定位槽10a包括第一表面101和连接于第一表面101两侧的第二表面102。第一表面101与补偿显示面板12的显示面相对设置。光学胶13与第一表面101贴合形成一全反射界面fs。全反射界面fs至少位于第一表面101的两侧区域。
由于光学胶13的折射率大于第一衬底1a1的折射率，使得第一表面101可作为全反射界面fs，当背光模组的光线通过光学胶13辐射到第一表面101时，会发生反射，从而降低了漏光的风险。
另外，补偿显示面板12的视角大于液晶面板11的视角。全反射界面fs设置第一表面101的两侧区域还能反射补偿显示面板12的大角度光线，降低了补偿显示面板12的光线干扰液晶面板11的效果。
可选的，液晶面板11还包括透明的框胶114，框胶114围设在液晶层112的外周且设置在第一基板111和第二基板113之间。框胶114位于液晶面板11的非显示区NA。框胶114与凹槽11a重叠设置。
本实施例采用框胶114和凹槽11a重叠，一方面减薄了第一衬底1a1对应于框胶114的部分，提高了光透过率，进而提高了框胶的固化效果；另一方面，可实现窄边框。
可选的，第二基板113包括第二衬底1b1和设置在第二衬底1b1靠近液晶层112一侧的黑色矩阵层1b2。黑色矩阵层1b2覆盖液晶面板11的显示区AA和非显示区NA。补偿显示面板12包括基底121和设置在基底121靠近第二基板113一侧的像素器件122。
在拼接显示面板100的正投影方向上，黑色矩阵层1b2设置在像素器件122之间。
采用黑色矩阵层1b2覆盖显示区AA和非显示区NA，可一次性避免液晶面板11和补偿显示面板12的像素发光串扰，且使得液晶面板11和补偿显示面板12的对比度趋于一致，又节省工艺步骤。另外黑色矩阵层1b2设置在非显示区NA可以进一步降低漏光的风险。
可选的，补偿显示面板12还包括封装层，封装覆盖第二衬底1b1和像素器件122。封装层连接光学胶13。
可选的，像素器件122包括但不限于Mini-LED、Micro-LED和OLED器件中的一种。
可选的，第二基板113还包括设置在第二衬底1b1靠近液晶层112一侧的彩膜层1b3。彩膜层1a3设置在黑色矩阵层1b2之间。
可选的，拼缝pf内填充有封装胶14，封装胶14连接于框胶114。封装胶14的折射率与框胶114的折射率相同。
其中，封装胶14的设置提高了拼接显示面板100的封装效果，也提高液晶面板11之间连接的稳定性。而封装胶14和框胶114的折射率一致，使得补偿显示面板12发出光的光路趋势趋于一致，提高显示效果。
可选的，拼接显示面板100还包括第一偏光片151和第二偏光片152。第一偏光片151设置在第一基板111远离液晶层112的一侧。第一偏光片151上设置有开口15a。开口15a与凹槽11a重叠且连通设置。补偿显示面板12设置在开口15a内。
其中，开口15a的边界位于凹槽11a的外侧或与凹槽11a的边界重合，使得补偿显示面板12设置在开口15a和凹槽11a内，提高平整度。
第二偏光片152设置在第二基板113远离液晶层112的一侧。第二偏光片152覆盖液晶面板11的显示区AA和非显示区NA。第二偏光片152与补偿显示面板12重叠设置。
可以理解的是，补偿显示面板12的发光亮度要比液晶面板11的发光亮度高。因此采用第二偏光片152覆盖补偿显示面板12的显示区域，可缩小补偿显示面板12和液晶面板11的发光亮度的差距，提高拼接显示面板100整体的显示效果。
实施例二、
请参照图3和图4，在实施例二提供一种拼接显示面板100，其包括至少两个液晶面板11和至少一个补偿显示面板12。液晶面板11包括显示区AA和非显示区NA，非显示区NA位于显示区AA至少一侧。
相邻两个液晶面板11拼接设置。相邻两个液晶面板11之间具有拼缝pf。补偿显示面板12设置在相邻两个液晶面板11的入光侧，且遮挡拼缝pf。液晶面板11包括依次层叠设置的第一基板111、液晶层112和第二基板113，第一基板111为液晶面板11的入光侧。第一基板111远离液晶层112的一侧设置有凹槽11a。凹槽11a设置在液晶面板11的非显示区NA。在相邻的两个液晶面板11中，一液晶面板11的凹槽11a和另一液晶面板11的凹槽11a相对设置且拼接连通形成一定位槽10a。补偿显示面板12设置在定位槽10a内。
需要说明的是，液晶面板11要实现显示功能，则需要在液晶面板11的入光侧设置背光模组。背光模组为液晶面板11提供面光源。
其中，在相关的技术中，在LED显示面板贴附在相邻两个液晶面板的拼接处时，LED显示面板的边界距离液晶面板的显示区具有一定的距离，当因贴附误差导致LED显示面板偏移，使得该距离过大时，背光模组发出的光线会透过LED显示面板和液晶面板的显示区之间的区域，导致漏光。其中，该距离受限于LED显示面板的贴附精度。
本申请实施例的拼接显示面板100在液晶面板11的拼接区域处设置定位槽10a，补偿显示面板12设置在定位槽10a内，由于定位槽10a的设置使得补偿显示面板12的贴附更为精准，降低了补偿显示面板12与液晶面板11的显示区AA之间距离过大的风险，从而降低了背光模组漏光的风险。
另外，由于背光模组设置在第一偏光片151远离液晶层112的一侧，因此背光模组发出的部分大角度光线会被补偿显示面板12所阻挡，相较于补偿显示面板12直接设置在平整的阵列基板侧，补偿显示面板12设置在定位槽10a内，补偿显示面板12起到阻挡背光射出的更多大角度光线，进一步降低了背光漏光的风险。比如，若补偿显示面板12设置在平整的阵列基板侧时，补偿显示面板12可以阻挡出射角度为160度以上的光线，而当补偿显示面板12设置在定位槽10a内时，由于补偿显示面板12往出光的方向移动了一定的距离，使得补偿显示面板12可以阻挡出射角度为150度以上的光线，进而补偿显示面板12可以阻挡更多的大角度光线，从而进一步减低了背光漏光的风险。
补偿显示面板12通过光学胶13设置在定位槽内10a。定位槽10a包括第一表面101和连接于第一表面101两侧的第二表面102。第一表面101与补偿显示面板12的显示面相对设置。
实施例二与上述实施例的不同之处在于：光学胶13的折射率小于第一衬底1a1的折射率。光学胶13与第二表面102贴合形成一全反射界面fs。
由于光学胶13的折射率小于第一衬底1a1的折射率，使得第二表面102可作为全反射界面fs，当背光模组的光线通过第一衬底1a1辐射到第二表面102时，会发生反射，从而降低了漏光的风险，且降低了光线干扰补偿显示面板12的风险。
另外，反射光辐射到液晶层112，提高背光的利用率。且当背光模组是侧入式背光时，反射光可提高液晶面板11远离光源一侧的亮度，使得背光的出光趋于均匀。
实施例三、
请参照图5和图6，在实施例三提供一种拼接显示面板100，其包括至少两个液晶面板11和至少一个补偿显示面板12。液晶面板11包括显示区AA和非显示区NA，非显示区NA位于显示区AA至少一侧。
相邻两个液晶面板11拼接设置。相邻两个液晶面板11之间具有拼缝pf。补偿显示面板12设置在相邻两个液晶面板11的入光侧，且遮挡拼缝pf。液晶面板11包括依次层叠设置的第一基板111、液晶层112和第二基板113，第一基板111为液晶面板11的入光侧。第一基板111远离液晶层112的一侧设置有凹槽11a。凹槽11a设置在液晶面板11的非显示区NA。在相邻的两个液晶面板11中，一液晶面板11的凹槽11a和另一液晶面板11的凹槽11a相对设置且拼接连通形成一定位槽10a。补偿显示面板12设置在定位槽10a内。
需要说明的是，液晶面板11要实现显示功能，则需要在液晶面板11的入光侧设置背光模组。背光模组为液晶面板11提供面光源。
其中，在相关的技术中，在LED显示面板贴附在相邻两个液晶面板的拼接处时，LED显示面板的边界距离液晶面板的显示区具有一定的距离，当因贴附误差导致LED显示面板偏移，使得该距离过大时，背光模组发出的光线会透过LED显示面板和液晶面板的显示区之间的区域，导致漏光。其中，该距离受限于LED显示面板的贴附精度。
本申请实施例的拼接显示面板100在液晶面板11的拼接区域处设置定位槽10a，补偿显示面板12设置在定位槽10a内，由于定位槽10a的设置使得补偿显示面板12的贴附更为精准，降低了补偿显示面板12与液晶面板11的显示区AA之间距离过大的风险，从而降低了背光模组漏光的风险。
另外，由于背光模组设置在第一偏光片151远离液晶层112的一侧，因此背光模组发出的部分大角度光线会被补偿显示面板12所阻挡，相较于补偿显示面板12直接设置在平整的阵列基板侧，补偿显示面板12设置在定位槽10a内，补偿显示面板12起到阻挡背光射出的更多大角度光线，进一步降低了背光漏光的风险。比如，若补偿显示面板12设置在平整的阵列基板侧时，补偿显示面板12可以阻挡出射角度为160度以上的光线，而当补偿显示面板12设置在定位槽10a内时，由于补偿显示面板12往出光的方向移动了一定的距离，使得补偿显示面板12可以阻挡出射角度为150度以上的光线，进而补偿显示面板12可以阻挡更多的大角度光线，从而进一步减低了背光漏光的风险。
补偿显示面板12通过光学胶13设置在定位槽内10a。定位槽10a包括第一表面101和连接于第一表面101两侧的第二表面102。第一表面101与补偿显示面板12的显示面相对设置。
实施三与上述实施例的不同之处在于：第二表面102上设置有挡光层16。
其中，实施例三中的光学胶13和第一衬底1a1的折射率关系不作限制，也即二者的折射率可以相同，也可以不同。
实施例三的拼接显示面板100在第二表面102设置挡光层16，以遮挡背光模组辐射至凹槽11a的光线，可以降低漏光的风险、降低了背光的光线干扰补偿显示面板12以及补偿显示面板12干扰液晶面板11的风险。
以上对本申请实施例所提供的一种拼接显示面板进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (16)

  1. 一种拼接显示面板，其包括：
    至少两个液晶面板，相邻两个所述液晶面板拼接设置，相邻两个所述液晶面板之间具有拼缝；以及
    补偿显示面板，所述补偿显示面板设置在相邻两个所述液晶面板的入光侧，且遮挡所述拼缝；
    所述液晶面板包括依次层叠设置的第一基板、液晶层和第二基板，所述第一基板为所述液晶面板的入光侧，所述第一基板远离所述液晶层的一侧设置有凹槽，所述凹槽设置在所述液晶面板的非显示区；
    在相邻的两个所述液晶面板中，一所述液晶面板的所述凹槽和另一所述液晶面板的所述凹槽相对设置且拼接连通形成一定位槽，所述补偿显示面板设置在所述定位槽内。
  2. 根据权利要求1所述的拼接显示面板，其中，所述凹槽的深度介于0.2毫米至0.4毫米之间。
  3. 根据权利要求1所述的拼接显示面板，其中，所述液晶面板的显示区的边缘到邻近的所述定位槽的侧壁的距离小于或等于50微米，所述液晶面板的显示区的边缘到所述补偿显示面板的侧壁的距离小于或等于100微米。
  4. 根据权利要求1所述的拼接显示面板，其中，所述第一基板包括第一衬底和设置在所述第一衬底靠近所述液晶层一侧的薄膜晶体管结构层，所述凹槽设置在所述第一衬底远离所述液晶层的一侧。
  5. 根据权利要求4所述的拼接显示面板，其中，所述薄膜晶体管结构层包括设置在所述第一衬底上的遮光层，薄膜晶体管设置在遮光层上；
    所述遮光层设置在所述液晶面板的显示区，还设置在所述非显示区和所述显示区的交界处靠近非显示区的一侧，在所述拼接显示面板的正投影方向上，所述遮光层位于所述补偿显示面板的外周且位于所述补偿显示面板的边界和所述液晶面板的所述显示区之间。
  6. 根据权利要求4所述的拼接显示面板，其中，所述补偿显示面板通过光学胶设置在所述定位槽内，所述光学胶的折射率大于所述第一衬底的折射率，所述定位槽包括第一表面和连接于所述第一表面两侧的第二表面，所述第一表面与所述补偿显示面板的显示面相对设置，所述光学胶与所述第一表面贴合形成一全反射界面，所述全反射界面至少位于所述第一表面的两侧区域。
  7. 根据权利要求4所述的拼接显示面板，其中，所述补偿显示面板通过光学胶设置在所述定位槽内，所述光学胶的折射率小于所述第一衬底的折射率，所述定位槽包括第一表面和连接于所述第一表面两侧的第二表面，所述第一表面与所述补偿显示面板的显示面相对设置，所述光学胶与所述第二表面贴合形成一全反射界面。
  8. 根据权利要求4所述的拼接显示面板，其中，所述补偿显示面板通过光学胶设置在所述定位槽内，所述定位槽包括第一表面和连接于所述第一表面两侧的第二表面，所述第一表面与所述补偿显示面板的显示面相对设置，所述第二表面上设置有挡光层。
  9. 根据权利要求6所述的拼接显示面板，其中，所述液晶面板还包括透明的框胶，所述框胶围设在所述液晶层的外周且设置在所述第一基板和所述第二基板之间，所述框胶位于所述液晶面板的非显示区，所述框胶与所述凹槽重叠设置。
  10. 根据权利要求7所述的拼接显示面板，其中，所述液晶面板还包括透明的框胶，所述框胶围设在所述液晶层的外周且设置在所述第一基板和所述第二基板之间，所述框胶位于所述液晶面板的非显示区，所述框胶与所述凹槽重叠设置。
  11. 根据权利要求8所述的拼接显示面板，其中，所述液晶面板还包括透明的框胶，所述框胶围设在所述液晶层的外周且设置在所述第一基板和所述第二基板之间，所述框胶位于所述液晶面板的非显示区，所述框胶与所述凹槽重叠设置。
  12. 根据权利要求9所述的拼接显示面板，其中，所述第二基板包括第二衬底和设置在所述第二衬底靠近所述液晶层一侧的黑色矩阵层，所述黑色矩阵层覆盖所述液晶面板的显示区和非显示区，所述补偿显示面板包括基底和设置在所述基底靠近所述第二基板一侧的像素器件；
    在所述拼接显示面板的正投影方向上，所述黑色矩阵层设置在所述像素器件之间。
  13. 根据权利要求9所述的拼接显示面板，其中，所述拼缝内填充有封装胶，所述封装胶连接于所述框胶，所述封装胶的折射率与所述框胶的折射率相同。
  14. 根据权利要求9所述的拼接显示面板，其中，所述拼接显示面板还包括第一偏光片和第二偏光片，所述第一偏光片设置在所述第一基板远离所述液晶层的一侧，所述第一偏光片上设置有开口，所述开口与所述凹槽重叠且连通设置，所述补偿显示面板设置在所述开口内；
    所述第二偏光片设置在所述第二基板远离所述液晶层的一侧，所述第二偏光片覆盖所述液晶面板的显示区和非显示区，所述第二偏光片与所述补偿显示面板重叠设置。
  15. 根据权利要求12所述的拼接显示面板，其中，所述第二基板还包括设置在所述第二衬底靠近所述液晶层一侧的彩膜层，所述彩膜层设置在所述黑色矩阵层之间。
  16. 根据权利要求12所述的拼接显示面板，其中，所述像素器件包括Mini-LED、Micro-LED和OLED器件中的一种。
PCT/CN2023/115183 2023-08-11 2023-08-28 拼接显示面板 Pending WO2025035496A1 (zh)

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