CN116129754A - Spliced screen and spliced display device - Google Patents

Abstract

The application discloses concatenation screen and splice display device, wherein, the concatenation screen, including a plurality of sub-display screens of mutual concatenation, every sub-display screen all includes array substrate, various membrane base plate and is located array substrate with liquid crystal layer between the various membrane base plate, wherein, every adjacent two splice department between the sub-display screen is provided with flexible OLED screen, flexible OLED screen is at perpendicular projection direction and adjacent two the at least part of the array substrate of sub-display screen coincides mutually. Through the structure, the overall display effect of the spliced screen is improved.

Description

Spliced screen and spliced display device

Technical Field

The invention relates to the field of display panels, in particular to a spliced screen and a spliced display device.

Background

With the high-speed development of display technology, the spliced screen has a large scene display effect, and can bring an immersive visual experience for a user, so that the spliced screen is widely applied to exhibition occasions.

The spliced screen is formed by splicing more than two sub-display screens, and can display a large-scale picture. Conventional sub-displays typically employ an iron bezel, each of which includes a display panel and a backlight, the periphery of which is provided with the iron bezel. Because the light transmittance of the iron frame is poor, black shading areas appear at the joint of two adjacent sub-display screens, so that no pixels are displayed at the joint, namely, a strip-shaped dark band exists between the spliced display panels, and the overall display effect of the spliced screen is affected.

Disclosure of Invention

The application provides a spliced screen and a spliced display device to improve the overall display effect of the spliced screen.

For solving the above-mentioned problem, this application provides a concatenation screen, including a plurality of sub-display screens of mutual concatenation, every sub-display screen all includes array substrate, various membrane base plate and is located array substrate with liquid crystal layer between the various membrane base plate, wherein, every adjacent two the concatenation department between the sub-display screen is provided with flexible OLED screen, flexible OLED screen is in perpendicular projection direction and adjacent two the at least partial coincidence of array substrate of sub-display screen.

Preferably, the array substrate of each sub-display screen is longer than the liquid crystal layer and the color film substrate; the flexible OLED screen is overlapped with the part of the array substrate, which is longer than the liquid crystal layer.

Preferably, the flexible OLED screen is located on a surface of the array substrate, which is close to the liquid crystal layer; the flexible OLED screen comprises a flip chip film and a circuit board, wherein the flip chip film passes through the splicing part of two adjacent array substrates and is connected with the circuit board at one side of the array substrates, which is away from the liquid crystal layer.

Preferably, the flexible OLED panel includes at least one row or one column of pixel units, each of the pixel units including at least red, blue and green sub-pixels; the pixel units adjacent to the flexible OLED panel and the sub-display panel further comprise white sub-pixels, and the white sub-pixels are located at the outermost side of the flexible OLED panel.

Preferably, the flexible OLED screen includes an outer pixel unit disposed close to the sub-display screen and an inner pixel unit disposed away from the sub-display screen, the outer pixel unit includes a white sub-pixel, and an area of the inner pixel unit is larger than an area of the outer pixel unit, so that brightness of the inner pixel unit and brightness of the outer pixel unit are equalized.

Preferably, a pressure sensor is arranged in the flexible packaging layer of the white sub-pixel; when at least part of pixel units of the flexible OLED screen are bent towards one side close to the array substrate, the pressure sensor detects pressure signals received by the white sub-pixels so as to control the closing of the white sub-pixels.

Preferably, the array substrates of two adjacent sub-display screens are arranged at intervals at the splicing position; at least part of pixel units of the flexible OLED screen penetrate through the interval positions of two adjacent array substrates.

Preferably, the flexible OLED screen sequentially includes a flexible polarizing layer, a first flexible layer, a light emitting layer, a flexible driving array layer, and a second flexible layer; at least the flexible driving array layer of the flexible OLED screen is bent towards one side close to the array substrates, penetrates through the interval positions of two adjacent array substrates and is aligned with the lower surfaces of the array substrates.

The application also provides a control method of a spliced screen, wherein the spliced screen is the spliced screen according to any one of the embodiments, the spliced screen is a 2N row of pixel units, the flexible OLED screen in the spliced screen comprises transverse flexible OLED screens positioned between two adjacent rows of sub-display screens, and the transverse flexible OLED screens are single pixel units; the spliced screen further comprises a liquid crystal grid driving circuit for controlling the sub-display screen, a first flexible grid driving circuit for controlling the transverse flexible OLED screen and a time sequence controller for controlling the liquid crystal grid driving circuit and the first flexible grid driving circuit; the control method comprises the following steps: the time schedule controller sequentially sends driving signals to two adjacent rows of pixel units through the liquid crystal grid driving circuit so as to drive the two adjacent rows of pixel units to emit light; when the transverse flexible OLED screen is positioned in an odd-numbered row, the time sequence controller sends driving signals which are the same as those of the pixel units in the N+1 row to the transverse flexible OLED screen through the first flexible grid driving circuit; when the transverse flexible OLED screen is positioned in an even number of rows, the time sequence controller sends driving signals which are identical to the pixel units of the N-1 rows to the transverse flexible OLED screen through the first flexible grid driving circuit.

Preferably, the flexible OLED screen further includes a longitudinal flexible OLED screen located between two adjacent columns of the sub-display screens and a second flexible gate driving circuit controlling the longitudinal flexible OLED screen; the control method further includes: and the time schedule controller sends the same driving signal to the longitudinal flexible OLED screen through the second flexible grid driving circuit, wherein the driving signal is the same as the pixel units of the adjacent columns of the same row of the longitudinal flexible OLED screen.

The beneficial effects of this application are: the flexible OLED screen is arranged at the joint of the adjacent two spliced sub-display screens, so that the flexible OLED screen is overlapped with the array substrates of the adjacent two sub-display screens at the joint, the area of a non-display area at the joint of the spliced screens is reduced, the visual interference of dark bands at the joint gap is reduced, the dark bands at the original joint are changed into display areas, and the display proportion of the spliced screens is improved. In addition, the splice of splice screen can be because of external scheduling factor (like expend with heat and contract with cold) for splice's size changes, can buckle through using flexible OLED screen in this application, when splice grow, tensile bending part's flexible OLED screen, when splice change diminishes, shrink stretching part's flexible OLED screen, thereby can handle splice's size change, play certain cushioning effect on the structure, make flexible screen change along with splice's size change, thereby the complete display comes out with the pixel, structural stability is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of one embodiment of a tiled screen of the present application;

FIG. 2 is a schematic cross-sectional view of a first embodiment of a spliced screen of the present application;

FIG. 3 is a schematic diagram of a pixel arrangement structure of an embodiment of a flexible OLED screen of the present application;

FIG. 4 is a schematic cross-sectional view of a second embodiment of a spliced screen of the present application;

fig. 5 is a schematic cross-sectional structure of a third embodiment of a spliced screen of the present application.

A sub-display screen 11; a 12 flexible OLED screen; 101 an array substrate; 102, a color film substrate; 111 a polarizing layer; 112 color film layers; 113 a liquid crystal layer; 114 drive the array layer; 115 substrates; 116 a lower polarizing layer; 117 positioning glue; 121 a flexible polarizing layer; 122 a first flexible layer; 123 a light emitting layer; 124 flexible drive array layer; 125 a second flexible layer; 126 flip chip film; 127 circuit board; 128/118 frame glue; 1201 pixel units; r red subpixels; a blue subpixel; a G green sub-pixel; w white sub-pixels; 12012, pixel units within; 12011 outer pixel units; 1211 a lateral flexible OLED screen; 1212 longitudinal flexible OLED screen.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be appreciated that the terms "comprises," "comprising," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed,

or also include elements inherent to such processes, methods, articles, or apparatus. Without 5 or more limitations, elements defined by the statement "include … …" are not to be excluded from inclusion

Additional identical elements may be present in a process, method, article, or apparatus that comprises the described elements.

It should be noted that if directional indications (such as up, down, left, right, front, and rear … …) are involved in the embodiments of the present application, the directional indications are merely used to explain the user's position in a particular gesture (e.g., attached

As shown), the relative positional relationship between the components, the movement, etc., and if the specific attitude 0 changes, the directional indication changes accordingly.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate embodiments mutually related to other embodiments

Separate or alternative embodiments are excluded. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

The design thought of the application is as follows: in order to reduce the area of the dark band area of the spliced screen, the overall display effect of the spliced screen is improved, and the display brightness of the dark band area is improved by adding a flexible OLED screen in the dark band area of the spliced screen, so that the overall display effect of the spliced screen is improved.

Referring to fig. 1 specifically, fig. 1 is a schematic top view structure diagram of an embodiment 0 of a spliced screen of the present application, where, as shown in fig. 1, the spliced screen includes a plurality of mutually spliced sub-elements

A display screen 11. A non-display splice 13 exists between every two adjacent sub-displays 11. In this embodiment, each splice 13 is provided with a flexible OLED screen 12. Wherein the flexible OLED screen 12 comprises a transverse flexible OLED screen arranged between two adjacent lines of sub-display screens 11, and

the longitudinal flexible OLED screens, which are arranged between two adjacent columns of sub-display screens 11, are not limited herein. 5, each sub-display 11 includes an array substrate 101, a color film substrate 102, and a bit

A liquid crystal layer 113 between the array substrate 101 and the color film substrate 102. Referring specifically to fig. 2, fig. 2 is a schematic cross-sectional structure of a first embodiment of a spliced screen of the present application. As shown in fig. 2, a flexible OLED screen 12 capable of emitting light is disposed at the joint between two adjacent sub-display screens 11. Specifically, the flexible OLED screen 12 is located in the dark band region of the adjacent two sub-display screens 11.

In this embodiment, the flexible OLED screen 12 coincides with at least a portion of the array substrates 101 of the two adjacent sub-display screens 11 in the vertical projection direction, so as to reduce the gray display area of the dark band area formed by splicing the array substrates 101 of the two adjacent sub-display screens 11, thereby increasing the overall display area of the spliced screen and improving the overall display effect.

In the present embodiment, the array substrate 101 of each sub-display 11 is longer than the liquid crystal layer 113 and the color film substrate 102, wherein a portion of the array substrate 101 longer than the liquid crystal layer 113 forms a dark band region. In this embodiment, the flexible OLED screen 12 is disposed at the portion of the array substrate 101 longer than the liquid crystal layer 113 and the portion longer than the color film substrate, that is, disposed in the dark band region, so as to reduce the area of the dark band region, thereby improving the overall display effect. In addition, the portion of the array substrate 101 longer than the liquid crystal layer 113 is further provided with traces, where the flexible OLED screen 12 is located on the array substrate 101 and coincides with the portion of the array substrate 101, and the trace distribution on the array substrate 101 is not changed, so that the normal trace of the sub-display screen 11 is ensured, and meanwhile, the non-display area of the sub-display screen 11 on the array substrate 101 is reduced.

It should be noted that most of the traces of the sub-display 11 are routed on the array substrate 101. The portion of the array substrate 101 longer than the liquid crystal layer 113 necessarily forms a non-display region, i.e., a dark band region, and does not normally emit light. The flexible OLED screen 12 is arranged in the non-luminous area, so that the display brightness and the display precision of the non-luminous area are improved. In general, the flexible OLED screen 12 has a higher display definition than conventional light emitting elements (e.g., lamps, etc.).

In the first embodiment, the array substrates 101 of the adjacent two sub-display screens 11 are disposed in abutment at the splice, that is, the interval of the array substrates 101 of the adjacent two sub-display screens 11 at the splice is very small. Wherein the flexible OLED screen 12 is located above the array substrate 101, and the upper side of the array substrate 101 is near to a side surface of the liquid crystal layer 113.

In this embodiment, the flexible OLED panel 12 includes at least a flip chip film 126 and a circuit board 127. The flip chip film 126 penetrates through the contact positions of the two adjacent array substrates 101 and is connected with a circuit board 127 positioned on one side of the array substrates 101 away from the liquid crystal layer 113. The circuit board 127 inputs an electrical signal into the flexible OLED screen 12 through the flip chip film 126, so that the flexible OLED screen 12 can display a picture.

Specifically, in the present embodiment, the flexible OLED screen 12 includes, in order from top to bottom, a flexible polarizing layer 121, a first flexible layer 122, a light emitting layer 123, a flexible driving array layer 124, and a second flexible layer 125. The second flexible layer 125 is disposed near the array substrate 101 and partially overlaps with adjacent two of the array substrates 101 in a vertical direction.

In this embodiment, at least the flexible driving array layer 124 of the flexible OLED screen 12 is bent toward the side close to the array substrate 101, so that the length of the flip chip film 126 connected to the flexible driving array layer 124 can be shortened. The flip chip film 126 is a flexible conforming film with built-in circuits and ICs (chips), and is used to connect the flexible driving array layer 124 and the circuit board 127, so as to transmit the electrical signal of the circuit board 127 to the flexible driving array layer 124, so as to drive the flexible OLED screen 12 to emit light. The second flexible layer 125 is used to support and protect the flexible driving array layer 124, and in this embodiment, the second flexible layer 125 is folded together with the flexible driving array layer 124. In other embodiments, the flexible driving array layer 124 may be laid flat on the array substrate 101 without bending, which may result in an increase in the length of the flip chip film 126 connected to the flexible driving array layer 124. The second flexible layer 125 may also be removed, but this may easily lead to problems such as unstable signals of the flexible OLED screen 12.

In this embodiment, the flexible driving array layer 124 and the second flexible layer 125 are preferably longer than the light emitting layer 123, the flexible polarizing layer 121 and the first flexible layer 122, so that the flexible driving array layer 124 and the second flexible layer 125 are easier to bend than other structures, thereby playing the role of buffering/protecting the light emitting layer 123. In other embodiments, it may be as long, i.e., all layers of the flexible OLED screen 12 may be folded together.

In this application, the color film substrate 102 includes a color film layer 112 disposed near the liquid crystal layer 113 and an upper polarizing layer 111 disposed on the color film layer 112 away from the liquid crystal layer 113. The array substrate 101 includes a driving array layer 114 disposed near the liquid crystal layer 113, the driving array layer 114 including TFTs, a substrate 115 under the driving array layer 114, and a lower polarizing layer 116 disposed on the substrate 115 away from the liquid crystal layer 113.

In this embodiment, the flexible polarizing layer 121 of the flexible OLED screen 12 is aligned with the upper surface of the upper polarizing layer 111 of the color film substrate 102, so that the overall flatness of the spliced screen is ensured. Wherein, part of the flexible OLED screen 12 is fixedly connected with the side walls of the color film substrates 102 of the adjacent two sub-display screens 11 through positioning glue 117. Specifically, the flexible polarizing layer 121 and the first flexible layer 122 of the flexible OLED screen 12 are abutted to part of the side walls of the color film substrate 102 through the positioning glue 117. In this embodiment, the flexible polarizing layer 121 and the first flexible layer 122 of the flexible OLED screen 12 are thinner than the color film substrate 102, so that the flexible driving array layer 124 and the second flexible layer 125 can be bent, which is not limited herein. Referring to fig. 2, the positioning glue 117 is a transparent glue, and light emitted by the flexible OLED screen can be penetrated out through the positioning glue 117, so that dark bands of the spliced screen are further reduced. The positioning glue 117 can be made extremely narrow so that the lighting units of the flexible screen fill the dark band area. Optionally, the positioning adhesive 117 may also be used with the first flexible layer, so as to perform packaging in the same process as the first flexible layer; at this time, the first flexible layer may be made of a material with an adhesive property, so that the first flexible layer is bonded to the adjacent sub-display panel in the dark band region.

The side wall of the light emitting layer 123, which is close to the sub display screen 12, is further provided with a sealant 128, which plays a role in shading light, so as to avoid mutual interference of light rays between the sub display screen 11 and the flexible OLED screen 12. Further, the side wall of the liquid crystal layer 113 in the sub-display screen 11, which is close to one side of the flexible OLED screen 12, may also be provided with a glue frame 118, so as to protect the liquid crystal and also prevent the light between the sub-display screen 11 and the flexible OLED screen 12 from interfering with each other.

In this embodiment, the flexible driving array layer 124 and the second flexible layer 125 of the flexible OLED screen 12 are bent towards the side close to the array substrate 101, that is, the flexible driving array layer 124 is ensured to be bent downwards, and the light emitting layer 123 is exposed, so that the influence on the light emission of the light emitting layer 123 is avoided.

In this embodiment, a plurality of pixel units may be included in the light emitting layer 123. Referring to fig. 3 in particular, fig. 3 is a schematic diagram illustrating a pixel arrangement structure of an embodiment of a flexible OLED screen according to the present application. As shown in fig. 3, the flexible OLED panel 12 includes at least one row or column of pixel cells 1201, and each pixel cell 1201 includes at least a red sub-pixel R, a blue sub-pixel B, and a green sub-pixel G.

Wherein the pixel cell 1201 of the flexible OLED panel 12 adjacent to the sub-display panel 11 further comprises a white sub-pixel W. Wherein the white subpixel W is located at the outermost side of the flexible OLED screen. That is, the flexible OLED screen 12 is provided with a white subpixel W at a position intersecting the sub-display screen 11.

Specifically, the flexible OLED screen 12 includes an outer pixel unit 12011 disposed close to the sub-display screen 11, and an inner pixel unit 12012 disposed away from the sub-display screen 11. The outer pixel unit 12011 and the inner pixel unit 12012 are each the pixel unit 1201. The outer pixel unit 12011 includes a white sub-pixel W, and the white sub-pixel W is disposed near one side of the sub-display panel 11. In one embodiment, the area of the inner pixel unit 12012 is larger than the area of the outer pixel unit 12011, so that the display brightness of the inner pixel unit 12012 and the outer pixel unit 12011 is balanced. This is because the white subpixel W is included in the outer pixel unit 12011, and emits white light, so that the display luminance of the outer pixel unit is higher than that of the inner pixel unit (made up of RGB subpixels), and therefore, by increasing the display area of the inner pixel unit 12012 near the middle where the white subpixel W is not provided, the light emission luminance of the inner pixel unit is increased, and further, the display luminance of the inner pixel unit 12012 and the outer pixel unit 12011 tends to be balanced.

Further, a pressure sensor is also provided in the flexible package layer of the white subpixel W. When at least part of the pixel units 1201 of the flexible OLED panel 12 are bent towards the side close to the array substrate 101, the pressure sensor detects the pressure signal received by the white sub-pixel W and transmits the pressure signal to the controller, so as to control the white sub-pixel W to be turned off, and thus the display brightness of the flexible OLED panel 12 is balanced. When the flexible OLED panel 12 is not bent, that is, the flexible OLED panel 12 is not pressed, the controller controls the white sub-pixel W to be turned on at a low brightness, thereby realizing brightness balance. The controller controls the white sub-pixel W to be completely closed when the white sub-pixel W is completely folded (namely, the white sub-pixel W is not at the front), and the controller properly adjusts the brightness of the inner pixel unit to improve the luminous uniformity of the flexible OLED screen because most of the light emitted by the folded white sub-pixel cannot penetrate out, and the power consumption is increased when the white sub-pixel is opened, so that the power consumption can be reduced when the white sub-pixel is closed, and meanwhile, the brightness of the outer pixel unit is lower than that of the inner pixel unit because the white sub-pixel is folded; when the white sub-pixel W part is folded and rolled (namely, when the white sub-pixel W part is on the front surface), the controller controls the white sub-pixel W to be turned on, and the brightness of the white sub-pixel W is controlled to be increased because the RGB light-emitting area of the outer pixel unit is smaller than that of the inner pixel unit at the moment, so that the brightness uniformity of the flexible OLED screen is improved; when the white sub-pixel W is folded and rolled up (i.e., when the white sub-pixel W is all on the front surface), the controller controls the white sub-pixel W to be turned on at low brightness, and the brightness of the outer pixel unit and the brightness of the inner pixel unit tend to be consistent by turning on the white sub-pixel W at low brightness, so that the brightness uniformity of the flexible OLED screen is improved at the moment. The controller may be a timing controller. Referring specifically to fig. 4, fig. 4 is a schematic cross-sectional structure of a second embodiment of a spliced screen of the present application. As shown in fig. 4, the light emitting layer 123 is bent in a direction approaching the array substrate 101, like the flexible driving array layer 124 and the second flexible layer 125. That is, at least part of the sub-pixels on both sides of the light emitting layer 123 are bent, at least the white sub-pixels W in the outer pixel unit are involved between the flexible driving array layer 124 and the array substrate 101, and when the white sub-pixels W are involved, the light of the white sub-pixels W cannot pass through from the front surface, and the controller controls the white sub-pixels W to be completely turned off. In this embodiment, the two sides of the light emitting layer 123 of the flexible OLED screen 12 may not be shielded by the bezel 128. In fig. 4, the white sub-pixel W is shown in a position, and other sub-pixels (RGB) are not specifically shown, and the specific arrangement of other sub-pixels is shown in fig. 3, which is not repeated here.

In the W sub-pixel, a pressure sensor is arranged at the middle position of a first flexible layer of the W sub-pixel; when the pressure sensor senses pressure, the W sub-pixel is indicated to be bent, the brightness of the W sub-pixel is increased at the moment, and the controller controls the brightness of the W sub-pixel to be half of the peak value; when the pressure sensor does not sense pressure, the W sub-pixel is not bent or is less in bending, the brightness of the W sub-pixel is lower at the moment, so that the brightness of the outer pixel unit and the brightness of the inner pixel unit are kept consistent, and the brightness of the W sub-pixel is controlled to be one quarter of a peak value by the controller. Meanwhile, an auxiliary pressure sensor is arranged at the junction of the W sub-pixel and the adjacent R/G/B sub-pixel, when the auxiliary pressure sensor senses pressure, the W sub-pixel is completely bent into a gap, and at the moment, the controller controls the W sub-pixel to be closed so as to reduce the power consumption of the whole pixel unit; meanwhile, the controller controls the brightness of the R/G/B sub-pixels in the outer pixel units to be improved, so that the brightness of the outer pixel units is adjusted to be consistent with the brightness of the inner pixel units as much as possible.

The present application further provides a third type of spliced screen, referring specifically to fig. 5, and fig. 5 is a schematic cross-sectional structure of a third embodiment of a spliced screen according to the present application. As shown in fig. 5, in the third embodiment, the array substrates 101 of two adjacent sub-displays 11 are arranged at a gap at the splice, that is, the gap distance is large. The distance between two adjacent sub-display panels 11 may be set according to the size of the flexible OLED panel 12 and the actual requirement.

In the third embodiment, the flexible driving array layer 124 and the second flexible layer 125 of the flexible OLED screen 12 are bent in a direction approaching the array substrates 101, and extend in a direction approaching the lower polarizing layer 116 of the array substrates 101 at a position spaced apart from the adjacent two array substrates 101. Specifically, the extending ends of the flexible driving array layer 124 and the second flexible layer 125 are aligned with the lower polarizing layer 116, at least not protruding from the lower surface of the lower polarizing layer 116, so as to ensure the uniformity of the spliced screen.

In the present embodiment, both ends of the flexible driving array layer 124 are spaced apart by the second flexible layer 125, so that the flip chip film 126 and the circuit board 127 connected to both ends of the flexible driving array layer 124 are spaced apart.

In the present embodiment, by extending the flexible driving array layer 124 to the outside near the circuit board 127 at the spaced positions penetrating the array substrate 101, the length of the flip chip film 126 is further shortened.

In the third embodiment, at least part of the pixel units 1201 of the flexible OLED screen 12 penetrate through the adjacent two array substrates 101 at the spaced positions, and at this time, the pixel units 1201 are pressed by the sidewalls of the array substrates 101.

In a third embodiment, the flexible OLED screen 12 includes two flip-chip films 126 and a circuit board 127, wherein one set of flip-chip films 126 is connected to the circuit board 127 and one end of the flexible drive array layer 124 of the flexible OLED screen 12, and the other set of flip-chip films 126 is connected to the circuit board 127 and the other end of the flexible drive array layer 124.

In this embodiment, two adjacent sub-display panels 11 are further connected to the first flip chip film and the second flip chip film, and the first circuit board and the second circuit board (not numbered in the figure), respectively. The first circuit board is connected with the driving array layer 114 of the sub-display screen 11 on one side of the flexible OLED screen 12 through the first flip chip film, and the second circuit board is connected with the driving array layer 114 of the sub-display screen 11 on the other side of the flexible OLED screen 12 through the second flip chip film. In one embodiment, the first circuit board and the first flip chip film and the second circuit board and the second flip chip film pass through the gaps between the two adjacent array substrates 101, that is, the first circuit board and the first flip chip film overlap with one group of the flip chip films 126 and the circuit board 127 in fig. 2, and the second circuit board and the second flip chip film overlap with the other group of the flip chip films 126 and the circuit board 127 in fig. 2. By leading the circuit boards and the flip-chip films of the adjacent two sub-display screens 11 out from the middle of the two spliced array substrates 101, the wiring difficulty of wiring is reduced. In another embodiment, the circuit board and flip chip film of the sub-display 11 may also be led out from the side facing away from the flexible OLED screen 12, which is not limited herein.

In this embodiment, the first flip chip film and the first circuit board and the second flip chip film and the second circuit board extend outwards at the middle position of the array substrate 101, and the first flip chip film and the second flip chip film are separated by the second flexible layer 125. The two ends of the second flexible layer 125 may abut against each other or may be spaced apart from each other, which is not limited herein.

The beneficial effects of the embodiment are as follows: the flexible OLED screen is arranged in the non-display area of the adjacent two spliced sub-display screens, so that the flexible OLED screen is overlapped with the non-display part of the array substrate of the adjacent two sub-display screens, the area of the non-display area of the spliced screen is reduced, the visual interference of the dark bands at the splice joint is reduced, the dark bands at the original splice joint are changed into display areas, and the display proportion of the spliced screen is improved. In addition, the joint is transited by the flexible panel, compared with other elements, the structure can play a certain role in buffering, and the structural stability is better.

The application also provides a control method of the spliced screen according to the structure of the spliced screen. The spliced screen is composed of 2N rows of pixel units, and comprises a sub-display screen 11 and a flexible OLED screen 12. The flexible OLED screen 12 in the tiled screen includes a lateral flexible OLED screen 1211 positioned between two adjacent rows of sub-display screens, wherein the lateral flexible OLED screen 1211 is a single pixel unit, i.e., includes only one group of pixel units. The tiled screen further includes a liquid crystal gate drive circuit that controls the sub-display screen 11, and a first flexible gate drive circuit that controls the lateral flexible OLED screen 1211, and a timing controller that controls the liquid crystal gate drive circuit and the first flexible gate drive circuit. The control method specifically comprises the following steps:

the timing controller sequentially sends driving signals to two adjacent rows of pixel units through the liquid crystal grid driving circuit so as to drive each two adjacent rows of pixel units in the sub display screen 11 to emit light.

When the transverse flexible OLED screen is located in an odd number row (N rows), the time sequence controller sends driving signals which are identical to those of the pixel units in the N+1 rows to the pixel units of the transverse flexible OLED screen through the first flexible grid driving circuit, so that the transverse flexible OLED screen 12 is connected with the sub-pixels of the sub-display screen 11, and picture display dislocation caused by display delay is avoided.

When the horizontal flexible OLED screen is located in an even number of rows (N rows), the time sequence controller sends driving signals which are identical to those of the pixel units in the N-1 rows to the pixel units of the horizontal flexible OLED screen through the first flexible grid driving circuit, so that the horizontal flexible OLED screen 12 is connected with the sub-pixels of the sub-display screen 11.

Further, the flexible OLED screen also includes a longitudinal flexible OLED screen 1212 positioned between two adjacent columns of sub-display screens, and a second flexible gate drive circuit controlling the longitudinal flexible OLED screen 1212. The control method for the longitudinal flexible OLED screen 1212 includes: the time sequence controller sends the same driving signals to the longitudinal flexible OLED screen through the second flexible grid driving circuit, wherein the driving signals are the same as the pixel units of the adjacent columns of the same row.

When the control method is adopted to control the display of the spliced screen, in order to facilitate the control, simplify the display control algorithm and improve the driving speed, only one row of pixel units (which are external pixel units) are arranged on the transverse flexible OLED screen, and white sub-pixels are arranged on two sides of each pixel unit. Because the signals of the longitudinal flexible OLED screen are the same as those of the pixel units in the adjacent columns of the same row, the longitudinal flexible OLED screen can be provided with a plurality of pixel units (namely a plurality of columns of pixel units), and the complexity of an algorithm is not increased at the moment, and the driving speed is not influenced. Therefore, for the arrangement of the longitudinal flexible OLED screen, a plurality of pixel units can be arranged on the longitudinal flexible OLED screen according to the fact that the transverse gap is made to be wider, so that the wider seam is adapted. In view of the display control speed, the transverse flexible OLED screen is set to have only one row of pixel units, so that the longitudinal slit is required to be sufficiently narrow, and other wiring and connecting structures can be arranged on two transverse sides of the sub-display screen as much as possible in order to adapt to the smaller longitudinal slit. By the design, the speed and the efficiency of display control are realized, and the display effect is improved.

Further, since the horizontal flexible OLED screen is provided with a row of pixel units (i.e., outer pixel units), the frames at the upper and lower ends of the sub-display screen are required to be extremely narrow, and since the longitudinal flexible OLED screen can be wider, the left and right ends of the sub-display screen can be wider. Therefore, in this embodiment, the liquid crystal gate driving circuit, the first flexible gate driving circuit, and the second flexible gate driving circuit are all disposed at the left and right ends of the sub-display screen, so as to further narrow the upper and lower frames of the sub-display screen.

In some embodiments, since the main driving signal of each row of pixels of the vertical flexible OLED panel is the same as the row of pixels in the sub-display panel of the same row, the liquid crystal gate driving circuit and the second flexible gate driving circuit may be combined and set to be the liquid crystal gate driving circuit in a unified manner, that is, the same row of pixels in the sub-display panel and the vertical flexible panel are driven by the liquid crystal gate driving circuit. At this time, the second flexible grid driving circuit is reduced, and only the liquid crystal grid driving circuit and the first flexible grid driving circuit are reserved, so that the liquid crystal grid driving circuit and the first flexible grid driving circuit are respectively arranged at the left end and the right end of the sub display screen, the left frame and the right frame of the sub display screen are further narrowed, and the display effect of the spliced screen is further improved.

The spliced screen aims at a studio or a large conference room and the like which need to use an oversized display picture, the traditional display panel without splicing can be 85 and 86 or larger, and the traditional display panel can meet most of use scenes. However, for a studio or a large conference room with an oversized display screen, the actual display panel or wall screen is far beyond 100 inches, and in this case, a plurality of small-sized display panels are used for splicing for convenience in installation and cost saving. Meanwhile, because of the oversized curtain wall of the studio or the large conference room, and the watching distance of spectators is far, the requirement on the display precision is not so high, at the moment, two adjacent rows of pixel units are driven by the same driving signal, namely, two adjacent rows of pixel units display the same color, at the moment, the effect on watching of users is little, and due to the arrangement of the transverse flexible OLED screen and the linkage display control of the sub-display screen, the driving algorithm is reduced, the driving speed is improved, and the display effect of the spliced screen is greatly improved.

In other embodiments, when the flexible OLED screen is a multi-pixel unit, including a plurality of rows or columns of pixel units, the resolution of the display image of the flexible OLED screen, the resolution of the sub-display screen, and the opening order of the pixel units may be set according to the resolution of the display image of the flexible OLED screen, which is not described herein.

The foregoing is only examples of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims (10)

1. The utility model provides a concatenation screen, includes a plurality of sub-display screens of mutual concatenation, every sub-display screen all includes array substrate, various membrane base plate and is located array substrate with liquid crystal layer between the various membrane base plate, its characterized in that, every adjacent two the concatenation department between the sub-display screen is provided with flexible OLED screen, flexible OLED screen is in perpendicular projection direction with adjacent two at least part of array substrate of sub-display screen coincides mutually.

2. The tiled display according to claim 1, wherein the array substrate of each of the sub-display screens is longer than the liquid crystal layer and the color film substrate; the flexible OLED screen is overlapped with the part of the array substrate, which is longer than the liquid crystal layer.

3. The tiled screen of claim 1, wherein the flexible OLED screen is located on a side surface of the array substrate proximate to the liquid crystal layer;

the flexible OLED screen comprises a flip chip film and a circuit board, wherein the flip chip film passes through the splicing part of two adjacent array substrates and is connected with the circuit board at one side of the array substrates, which is away from the liquid crystal layer.

4. The tiled, color, screen of claim 1, wherein the flexible OLED screen includes at least one row or column of pixel elements, each pixel element including at least a red sub-pixel, a blue sub-pixel, and a green sub-pixel; the pixel units adjacent to the flexible OLED panel and the sub-display panel further comprise white sub-pixels, and the white sub-pixels are located at the outermost side of the flexible OLED panel.

5. The tiled display according to claim 4, wherein the flexible OLED screen includes an outer pixel element disposed proximate to the sub-display screen and an inner pixel element disposed distal from the sub-display screen, the outer pixel element including a white sub-pixel, the inner pixel element having an area greater than an area of the outer pixel element to equalize the brightness of the inner and outer pixel elements.

6. The tiled screen of claim 4, wherein a pressure sensor is disposed within the flexible encapsulant of the white subpixel; when at least part of pixel units of the flexible OLED screen are bent towards one side close to the array substrate, the pressure sensor detects pressure signals received by the white sub-pixels so as to control the closing of the white sub-pixels.

7. The spliced screen of claim 4, wherein array substrates of two adjacent sub-display screens are arranged at intervals at the spliced position;

at least part of pixel units of the flexible OLED screen penetrate through the interval positions of two adjacent array substrates.

8. The tiled screen of claim 7, wherein the flexible OLED screen includes, in order, a flexible polarizing layer, a first flexible layer, a light emitting layer, a flexible drive array layer, and a second flexible layer;

at least the flexible driving array layer of the flexible OLED screen is bent towards one side close to the array substrates, penetrates through the interval positions of two adjacent array substrates and is aligned with the lower surfaces of the array substrates.

9. A control method of a spliced screen, characterized in that the spliced screen is the spliced screen according to any one of claims 1 to 8, the spliced screen is a 2N row of pixel units, the flexible OLED screens in the spliced screen comprise transverse flexible OLED screens positioned between two adjacent rows of sub-display screens, and the transverse flexible OLED screens are single pixel units; the spliced screen further comprises a liquid crystal grid driving circuit for controlling the sub-display screen, a first flexible grid driving circuit for controlling the transverse flexible OLED screen and a time sequence controller for controlling the liquid crystal grid driving circuit and the first flexible grid driving circuit;

the control method comprises the following steps:

the time schedule controller sequentially sends driving signals to two adjacent rows of pixel units through the liquid crystal grid driving circuit so as to drive the two adjacent rows of pixel units to emit light;

when the transverse flexible OLED screen is positioned in an odd-numbered row, the time sequence controller sends driving signals which are the same as those of the pixel units in the N+1 row to the transverse flexible OLED screen through the first flexible grid driving circuit;

when the transverse flexible OLED screen is positioned in an even number of rows, the time sequence controller sends driving signals which are identical to the pixel units of the N-1 rows to the transverse flexible OLED screen through the first flexible grid driving circuit.

10. The method of claim 9, wherein the flexible OLED screen further comprises a longitudinal flexible OLED screen positioned between two adjacent columns of the sub-display screens and a second flexible gate driving circuit controlling the longitudinal flexible OLED screen;

the control method further includes: and the time schedule controller sends the same driving signal to the longitudinal flexible OLED screen through the second flexible grid driving circuit, wherein the driving signal is the same as the pixel units of the adjacent columns of the same row of the longitudinal flexible OLED screen.

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