CN216696933U

CN216696933U - Splicing display panel and splicing display device

Info

Publication number: CN216696933U
Application number: CN202220598638.XU
Authority: CN
Inventors: 赵军; 赵斌; 肖军城; 徐洪远; 郑峰; 霍雯雪
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-06-07
Anticipated expiration: 2032-03-18

Abstract

The embodiment of the application discloses a splicing display panel and a splicing display device. The splicing display device provided by the embodiment of the application comprises a splicing display panel. The spliced display panel comprises at least two first display modules and at least two second display modules which are spliced. The first display module is provided with a display area and a frame area. And two adjacent frames form a splicing area. The first display module comprises an array substrate, a liquid crystal layer, an opposite substrate and frame glue. The second display module is arranged on the array substrate and at least covers part of the splicing area. The frame glue covers the second display module. The second display module is used for displaying the picture of the frame area. The splicing display panel is embedded with the second display module in the frame glue of the first display module, so that the smoothness of the display surface of the first display module can be ensured, and the problem that the splicing area generates height difference on the display surface of the first display module and then black shadow is caused is solved.

Description

Splicing display panel and splicing display device

Technical Field

The application relates to the technical field of display, in particular to a spliced display panel and a spliced display device.

Background

Micro Light-Emitting Diode (Micro-LED) Display technology has developed into one of the hot spots of future Display technology, and compared with the current Liquid Crystal Display (LCD) and Organic Light-Emitting Diode (OLED) Display devices, the Micro Light-Emitting Diode (Micro-LED) Display technology has the advantages of fast response, high color gamut, high PPI, low energy consumption, and the like. However, Micro-LEDs have many technical difficulties and complex technology, especially their key technologies, mass transfer technology and LED particle miniaturization, are technical bottlenecks.

The submillimeter Light-Emitting Diode (Mini-LED) as a product of combining the Micro-LED and the back plate has the characteristics of high contrast, high color rendering performance and the like which are comparable to those of an OLED (organic Light-Emitting Diode), the cost is slightly higher than that of the LCD, the cost is only about six costs of the OLED, and the implementation is easier compared with that of the Micro-LED and the OLED, so that the Mini-LED becomes a layout hotspot of various large panel manufacturers. The Micro-LED and Mini-LED technologies are collectively defined as MLED technologies, and specifically, the technology is to transfer LEDs to a back panel and then drive the LEDs to emit light by using devices on the back panel. Such products can be used as backlights, and small pitch MLED products can be used directly as display products.

Due to the thickness problem of the frame glue, the large-size LCD product has the problem of large splicing seams, so that the display picture is not good. In the research and practice process of the prior art, the inventor of the application finds that the Mini-LED chip is pasted on the upper surface of the frame glue position of the LCD splicing screen at the present stage, and the zero splicing effect of the large-size LCD screen is realized through system design. However, because the Mini-LED is higher in height and is located on the upper surface of the sealant, the Mini-LED has a larger height difference with the LCD display screen, so that the Mini-LED shows a black shadow.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a tiled display panel and tiled display device, can reduce the difference in height of tiled display panel piece department, improves the picture quality of piece department.

The embodiment of the application provides a tiled display panel, its characterized in that includes:

the display device comprises at least two first display modules which are spliced, wherein each first display module is provided with a display area and frame areas, a splicing area is formed by two adjacent frame areas, and each first display module comprises an array substrate, a liquid crystal layer, opposite substrates and frame glue; the array substrate and the opposite substrate are oppositely arranged, and the frame glue is connected between the array substrate and the opposite substrate corresponding to the frame area; the liquid crystal layer is arranged between the array substrate and the opposite substrate corresponding to the display area;

the second display module is arranged on the array substrate and at least covers part of the splicing area, the frame glue covers the second display module, the frame glue is light-transmitting, and the second display module is used for displaying pictures in the splicing area.

Optionally, in some embodiments provided in the present application, the light transmittance of the sealant is greater than 70%.

Optionally, in some embodiments provided in the present application, the thickness of the second display module is smaller than the thickness of the first display module.

Optionally, in some embodiments provided by the present application, a seam is further provided in the splicing region, and the seam is filled with optical cement.

Optionally, in some embodiments provided herein, a projection of the second display module on the array substrate corresponds to the splicing region, and an inward or outward deviation distance of the second display module on at least one side of the splicing region is 0 to 300 micrometers.

Optionally, in some embodiments provided in this application, the second display module includes a light emitting structure and a circuit structure, the light emitting structure is one or a combination of multiple light emitting diode elements, micro light emitting diode elements, and sub-millimeter light emitting diode elements, and the circuit structure is disposed on a side away from the light exit surface of the light emitting structure and controls the light emitting structure to emit light.

Optionally, in some embodiments provided in the present application, the second display module further includes a light conversion layer, and the light conversion layer is disposed on the first side of the light emitting structure away from the circuit structure.

Optionally, in some embodiments provided in the present application, the light conversion layer has a first light conversion sublayer, a second light conversion sublayer and a light transmission hole that are disposed on the same layer, and colors of light rays excited by the first light conversion sublayer and the second light conversion sublayer are different.

Optionally, in some embodiments provided herein, the light conversion layer has a first light conversion sublayer, a second light conversion sublayer and a third light conversion sublayer disposed in the same layer; the first light conversion sublayer, the second light conversion sublayer and the third light conversion sublayer are different in color of light rays excited respectively.

Correspondingly, this application embodiment still provides a tiled display device, tiled display device includes tiled display panel and backlight unit, tiled display panel be above arbitrary the tiled display panel, backlight unit is used for providing first display module's is shaded.

The embodiment of the application provides a splicing display panel and a splicing display device. The splicing display device provided by the embodiment of the application comprises a splicing display panel. The splicing display panel is embedded with the second display module in the frame glue of the first display module. The second display module is used for displaying the picture in the frame area, so that the large-size display panel has a zero-splicing display effect when displaying the picture. Because the splicing display panel provided by the embodiment of the application embeds the second display module into the frame glue, the display surface of the first display module can be ensured to be flat, and the problem that the splicing area generates height difference on the display surface of the first display module and then black shadow is caused to appear is solved. And the circuit signals of the first display module and the second display module are controlled by the same system, so that the picture fusion of the first display module and the second display module is realized, the picture can be normally displayed in the splicing area, and the continuity and the integrity of the display picture of the splicing display panel are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a tiled display panel according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a second structure of a tiled display panel provided in an embodiment of the present application;

fig. 3 is a schematic view of a first structure of a second display module in a tiled display panel according to an embodiment of the present disclosure;

fig. 4 is a schematic view of a second structure of a second display module in a tiled display panel according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a tiled display device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

The embodiment of the application provides an array substrate and a manufacturing method of the array substrate. The following are detailed descriptions. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

Referring to fig. 1, fig. 1 is a schematic view illustrating a first structure of a tiled display panel according to an embodiment of the present disclosure. The tiled display panel 100 provided by the embodiment of the application comprises a first display module 101 and a second display module 102 which are spliced by at least two pieces. The first display module 101 has a display area AA and a frame area NA. Two adjacent border areas NA form a splicing area S. The first display module 101 includes an array substrate 1011, a liquid crystal layer 1012, an opposite substrate 1013, and sealant 1014. The array substrate 1011 is disposed opposite to the counter substrate 1013. The sealant 1014 is connected between the array substrate 1011 and the opposite substrate 1013 corresponding to the frame region NA. The liquid crystal layer 1012 is disposed between the array substrate 1011 and the opposite substrate 1013 corresponding to the display area AA. The second display module 102 is disposed on the array substrate 1011 and covers at least a portion of the splicing region S. The sealant 1014 covers the second display module 102. The sealant 1014 transmits light. The second display module 102 is used for displaying the images in the splicing region S.

The tiled display panel 100 provided in the embodiment of the present application embeds the second display module 102 in the sealant 1014 of the first display module 101. The second display module 102 is used for displaying the image of the frame area NA, so that the large-size display panel has a zero-seam display effect when displaying the image. Because the second display module 102 is embedded into the sealant 1014 of the tiled display panel 100 provided by the embodiment of the present application, the display surface of the first display module 101 can be ensured to be flat, and the problem that the tiled area S generates a height difference on the display surface of the first display module 101, thereby causing a black shadow is solved. In addition, the circuit signals of the first display module 101 and the second display module 102 are controlled by the same system, so that the image fusion of the first display module 101 and the second display module 102 is realized, the spliced area S can normally display images, and the continuity and the integrity of the images displayed by the spliced display panel 100 are improved.

The display surface in the embodiment of the present application is a surface on which the first display module 101 displays a picture. Specifically, the second display module 102 also displays on the display surface, and at this time, the display surface not only covers the display area AA of the first display module 101, but also covers the frame area NA of the first display module 101.

Optionally, the projection of the second display module 102 on the array substrate 1011 corresponds to the splicing region S, that is, the second display module 102 may cover the splicing region S, and the sealant 1014 is disposed on a side of the second display module 102 away from the array substrate 1011. Specifically, the projection area of the second display module 102 on the array substrate 1011 is equal to the area of the splicing region S. In order to avoid the influence of the second display module 102 on the deflection of the liquid crystal layer 1012 and the backlight emission of the first display module 101 in the display area AA, and further influence on the display of the first display module 101, the projection area of the second display module 102 on the array substrate 1011 is equal to the area of the splicing area S. The design can ensure that the splicing area S obtains the best splicing display effect. In a product, the second display module 102 may be allowed to have a certain error from the splicing region S. Specifically, the second display module 102 may be biased inward or outward by 100 micrometers to 300 micrometers around the splicing region S. Further, the error value may be 100 microns, 150 microns, 200 microns, 250 microns, or 300 microns. The error may be caused by a difference between a projection area of the second display module 102 on the array substrate 1011 and an area of the splicing region S, or caused by a deviation of alignment, which is not limited in the present application. In addition, the error range can prevent the influence of the deviation error of the polarizer on the polarizer.

Optionally, the second display module 102 may cover a part of the splicing region S, and the sealant 1014 is disposed on a side of the second display module 102 away from the array substrate and extends to a side of the second display module 102 close to the display area AA or away from the display area AA. The sealant 1014 extends to a side of the second display module 102 close to the display area AA or far from the display area AA to prevent the liquid crystal layer 1012 of the first display module 101 from leaking, thereby achieving a better sealant effect.

It should be noted that in the tiled display panel 100 provided in the embodiment of the present application, the sealant 1014 covering the second display module 102 may be the sealant 1014 disposed on a side of the second display module 102 away from the array substrate 1011, or the sealant 1014 disposed on a side of the second display module 102 away from the array substrate and extending to a side of the second display module 102 close to the display area AA or far away from the display area AA.

Optionally, the light transmittance of the sealant is more than 70%. The light transmittance of the frame sealant 1014 is more than 70%. The second display module 102 provided in the embodiment of the present application is disposed in the sealant 1014 of the first display module 101. In order to ensure that the second display module 102 can normally display on the display surface, the material of the sealant 1014 needs to be selected to ensure that the light transmittance thereof is over 70%. The optical effect at the splicing area S of the tiled display panel 100 is improved. The sealant 1014 covers the splicing region S. Therefore, the light transmittance of the whole splicing region S can be ensured, the second display module 102 arranged corresponding to the splicing region S can normally display on the display surface, the light loss can be reduced, and the power consumption is reduced.

Specifically, the light transmittance of the sealant 1014 can be 70%, 75%, 80%, 85%, 90%, 95%, or 98%. The material of sealant 1014 is well known to those skilled in the art, and therefore will not be described herein.

It should be noted that the sealant 1014 is disposed on the light-emitting surface of the second display module 102. Optionally, the frame area NA eliminates the design of a metal trace and a Black Matrix (BM). That is, the metal wire originally disposed in the border area NA may be routed in other border areas that are not used for splicing, or disposed through the back of the first display module 101. The sealant 1014 is made of a material with a light transmittance of more than 70%, so that the display of the second display module 102 is not blocked by the frame area NA.

Optionally, the thickness of the second display module 102 is smaller than that of the first display module 101. The second display module 102 with low thickness is embedded in the sealant 1014, so that the sealant 1014 is substantially the same as the first display module 101. Therefore, the second display module 102 is not different in height from the first display module 101, so that black shadow is prevented from being generated at the splicing area S, and the image quality effect of the splicing area S is improved.

Optionally, please refer to fig. 2, and fig. 2 is a schematic diagram of a second structure of the tiled display panel according to the embodiment of the present application. In the tiled display panel 100 shown in fig. 2, a seam P is also provided in the tiled region S. The joints P are filled with Optical Clear Adhesive (OCA) 103. When the OCA optical cement is used for surface connection, the strength is higher. In addition, the OCA optical cement has high light transmittance, and the abutted seam P can be effectively eliminated. The seam P is a small gap between the first display module 101 and the second display module. The display effect is not usually affected due to the small distance of the gap. If the optical glue 103 is filled in the seam P, a more complete and continuous picture can be displayed. Therefore, the stability that two adjacent first display module assembly 101 are connected not only can be guaranteed to the OCA optical cement, can also make the product surface more level and more smooth, avoids appearing the uneven problem of thickness, and then improves tiled display panel 100's display effect.

Optionally, please refer to fig. 3, where fig. 3 is a schematic view of a first structure of a second display module in a tiled display panel according to an embodiment of the present application. The second display module 102 includes a light emitting structure 1021 and a circuit structure 1022. The Light Emitting structure 1021 is one or more of a Light-Emitting Diode (LED) element, a Micro Light-Emitting Diode (Micro-LED) element, and a sub-millimeter Light-Emitting Diode (Mini-LED) element. The circuit structure 1022 is disposed on a side away from the light emitting surface of the light emitting structure 1021, and controls the light emitting structure 1021 to emit light.

The second display module 102 adopts Micro-LED, Mini-LED and other small-sized light emitting diodes to emit light for display, and Micro-LED light emitting structures and Mini-LED light emitting structures with smaller spacing can be manufactured by improving the process and the design of the panel. After the distances between the light emitting diodes of the Micro LED light emitting structure and the Mini LED light emitting structure are reduced, on one hand, higher-resolution display can be realized in a narrow abutted seam, and the display effect is enhanced; on the other hand, the effect of no boundary can be visually achieved, and the first display module 101 can be better fused, so that the display picture is more continuous and complete.

Alternatively, the second display module 102 may use leds emitting red light, blue light, and green light directly for display. Alternatively, the second display module 102 further includes a light conversion layer 1023. The light conversion layer 1023 is disposed on a side of the light emitting structure 1021 away from the circuit structure 1022. Among them, the light conversion layer 1023 may be a quantum dot layer. The particle size of Quantum Dot (QD) materials is typically between 1 nanometer (nm) and 10 nm. Because electrons and holes are limited by quanta, the continuous energy band structure is changed into a discrete energy level structure, so that the light-emitting spectrum of the quantum dot material is very narrow. Therefore, the quantum dot light-emitting device has high color purity and wide display color gamut. Meanwhile, the light loss through the frame glue 1014 is small, and low-power display can be realized.

Among them, the light conversion layer 1023 may also be an up-conversion material. Upconverters are materials that emit short wavelength light when excited by long wavelength light, and such materials are generally excited by near infrared light to emit visible light. The near infrared light source has a high penetration depth. The up-conversion material has the advantages of large anti-Stokes shift, long fluorescence life, high light stability, strong chemical stability, high signal-to-noise ratio and the like.

Alternatively, the light conversion layer 1023 has a first light conversion sublayer 1023a, a second light conversion sublayer 1023b, and a light-transmissive hole 1023d disposed in the same layer. The colors of the light rays emitted from the first light conversion sublayer 1023a and the second light conversion sublayer 1023b are different.

Optionally, the second display module 102 can emit red, green, and blue light. For example, the light emitting structure 1021 is a blue LED, a blue Mirco-LED or a blue Mini-LED. That is, the light emitting structure 1021 emits blue light. The first light conversion sublayer 1023a emits red light under excitation of blue light. The second light conversion sublayer 1023b emits green light upon excitation with blue light. The light-transmitting hole 1023d is used for guiding out blue light. In the structure of the second display module 102 provided in this embodiment, the light-transmitting hole 1023d is disposed on the light-converting layer 1023. Under the condition that incident light can not pass through color conversion, because incident light directly passes through light trap 1023d outgoing, can improve the light utilization ratio.

Optionally, please refer to fig. 4, where fig. 4 is a schematic diagram of a second structure of a second display module in the tiled display panel according to the embodiment of the present application. The light conversion layer 1023 has a first light conversion sublayer 1023a, a second light conversion sublayer 1023b, and a third light conversion sublayer 1023c disposed in layers. The colors of the light rays emitted from the first light-conversion sublayer 1023a, the second light-conversion sublayer 1023b and the third light-conversion sublayer 1023c are different.

Optionally, when the second display module 102 emits red, green, and blue light. The light emitting structure 1021 may be a light emitting structure 1021 emitting laser light, or an LED element emitting white light. The first light conversion sublayer 1023a emits red light under the excitation of light emitted by the light emitting structure 1021, the second light conversion sublayer 1023b emits green light under the excitation of light emitted by the light emitting structure 1021, and the third light conversion sublayer 1023c emits blue light under the excitation of light emitted by the light emitting structure 1021.

In some embodiments, the tiled display panel 100 can also be arranged in four pixel colors, red, green, blue, and white (RGBW). When the light emitting structure 1021 emits white light, the light conversion layer 1023 may include a first light conversion sub-layer 1023a, a second light conversion sub-layer 1023b, a third light conversion sub-layer 1023c, and a light transmissive hole 1023d, which are disposed in the same layer. At this time, the first light conversion sublayer 1023a may emit red light, the second light conversion sublayer 1023b may emit green light, the third light conversion sublayer 1023c may emit blue light, and the light-transmitting holes 1023d transmit white light. The specific display mode is the same as that described above, and is not described herein again. Similarly, a light guide layer may be disposed in the light-transmitting hole 1023d to achieve a better display effect.

It should be noted that the colors of the emergent light of the first light conversion sublayer 1023a, the second light conversion sublayer 1023b and the third light conversion sublayer 1023c are only examples, and are not limited to the arrangement order of the red, green and blue light.

Correspondingly, the embodiment of the application also provides a splicing display device. Referring to fig. 5, fig. 5 is a schematic structural diagram of a tiled display device according to an embodiment of the present application. The tiled display device 1000 provided by the embodiment of the application comprises a tiled display panel 100 and a backlight module 200. The tiled display panel 100 is any of the tiled display panels 100 described above. The backlight module 200 is used for providing backlight for the first display module 101.

The tiled display apparatus 1000 provided in the embodiment of the present application includes a tiled display panel 100. The tiled display panel 100 embeds the second display module 102 in the sealant 1014 of the first display module 101. The second display module 102 is used for displaying the image of the frame area NA, so that the large-size display panel has a zero-seam display effect when displaying the image. Because the tiled display panel 100 provided by the embodiment of the application embeds the second display module 102 into the sealant 1014, the display surface of the first display module 101 can be ensured to be flat, and the problem that the tiled area S generates a height difference on the display surface of the first display module 101, thereby causing a black shadow is solved. In addition, the circuit signals of the first display module 101 and the second display module 102 are controlled by the same system, so that the image fusion of the first display module 101 and the second display module 102 is realized, the spliced area S can normally display images, and the continuity and the integrity of the images displayed by the spliced display panel 100 are improved.

The tiled display apparatus 1000 provided by the present application can be applied to an electronic device, and the electronic device can be at least one of a smart phone, a tablet computer, an e-book reader, a computer, a media player, a mobile medical machine, a camera, a game machine, a car navigator, or an electronic billboard.

The tiled display panel and the tiled display device provided by the embodiment of the present application are described in detail above, and specific examples are applied in the description to explain the principle and the implementation manner of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A tiled display panel, comprising:

the display device comprises at least two first display modules which are spliced, wherein each first display module is provided with a display area and a frame area, a splicing area is formed by two adjacent frame areas, and each first display module comprises an array substrate, a liquid crystal layer, an opposite substrate and frame glue; the array substrate and the opposite substrate are oppositely arranged, and the frame glue is connected between the array substrate and the opposite substrate corresponding to the frame area; the liquid crystal layer is arranged between the array substrate and the opposite substrate corresponding to the display area;

2. The tiled display panel of claim 1, wherein the frame glue has a light transmittance of 70% or more.

3. The tiled display panel of claim 1, wherein the thickness of the second display module is less than the thickness of the first display module.

4. The tiled display panel of claim 1, further having a seam in the tiled area, wherein the seam is filled with optical glue.

5. The tiled display panel of claim 1, wherein the projection of the second display module on the array substrate corresponds to the tiled area, and the second display module is offset inward or outward by a distance of 0 to 300 microns on at least one side of the tiled area.

6. The tiled display panel according to claim 1, wherein the second display module comprises a light emitting structure and a circuit structure, the light emitting structure is one or more of a light emitting diode element, a micro light emitting diode element and a sub-millimeter light emitting diode element, and the circuit structure is disposed on a side away from the light emitting surface of the light emitting structure and controls the light emitting structure to emit light.

7. The tiled display panel of claim 6, wherein the second display module further comprises a light conversion layer disposed on the first side of the light emitting structure away from the circuit structure.

8. The tiled display panel of claim 7, wherein the light conversion layer has a first light conversion sublayer, a second light conversion sublayer and a light hole disposed on the same layer, and the color of the light emitted from the first light conversion sublayer is different from that of the light emitted from the second light conversion sublayer.

9. The tiled display panel of claim 7 wherein the light conversion layer has a first light conversion sublayer, a second light conversion sublayer, and a third light conversion sublayer disposed on the same layer; the first light conversion sublayer, the second light conversion sublayer and the third light conversion sublayer are different in color of light rays excited respectively.

10. A tiled display device, comprising a tiled display panel and a backlight module, wherein the tiled display panel is the tiled display panel according to any one of claims 1 to 9, and the backlight module is configured to provide backlight to the first display module.