CN103713436A - Flexible substrate and display device - Google Patents
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- CN103713436A CN103713436A CN201310675784.3A CN201310675784A CN103713436A CN 103713436 A CN103713436 A CN 103713436A CN 201310675784 A CN201310675784 A CN 201310675784A CN 103713436 A CN103713436 A CN 103713436A
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Abstract
The invention belongs to the field of display technologies and particularly relates to a flexible substrate and a display device. The flexible substrate comprises a plane are and a bent area. Each of the plane area and the bent area is provided with pixels. Arrangement density of the pixels in the bent area is larger than that of the pixels in the plane area. The flexible substrate has higher resolution and definition of displayed pictures; meanwhile, the resolution and definition of the display device is increased; better visual experience is brought to people.
Description
Technical field
The invention belongs to display technique field, be specifically related to a kind of flexible base, board and display device.
Background technology
Flat panel display has had development by leaps and bounds in nearly ten years, liquid crystal indicator (Liquid Crystal Display: be called for short LCD) and organic electroluminescence display device and method of manufacturing same (Organic Light-Emitting Diode is called for short OLED) become the panel display apparatus of current main flow.
Along with further developing of science and technology, flexible device obtains more and more wide application in daily life.Flexible electronic device is flexible display apparatus (flexible display especially, also claim flexible display device), rely on the characteristics such as its frivolous, bent even curling, good mechanical property to be widely used in the field that needs curved surface to show, as smart card, Electronic Paper, intelligent label application etc., nearly cover conventional display device all application that can be suitable for, become gradually the new lover in display technique field.
In flexible display apparatus, pixel is normally produced on flexible carrier, for solid-state flexible display screen, due to the characteristic of its bending, also brings very large challenge to its designing and making.For example: flexible display screen inevitably will exist engaging and transition of plane area and bent area, and current flexible display screen generally adopts the pixel of single size, make bent area because its flexible carrier exists relative surface (in the present invention, bent area can be regarded as the curved surface that has certain angle of bend), be easy to occur scalloping and metamorphopsic distortion, cause the resolution of bent area and sharpness far away from resolution and the sharpness of plane area, produce the collimation error.
Increasingly extensiveization along with flexible display apparatus product range of application, people have higher expectation for the image demonstration of bent area, how to improve resolution and the sharpness of solid-state flexible display screen, especially in resolution and the sharpness of bent area, for people bring better visual experience, become current display technique field technical matters urgently to be resolved hurrily.
Summary of the invention
Technical matters to be solved by this invention is for above shortcomings in prior art, and a kind of flexible base, board and display device are provided, and this flexible base, board has resolution and the sharpness of higher display frame, for people bring better visual experience.
The technical scheme that solution the technology of the present invention problem adopts is this flexible base, board, comprise plane area and bent area, in described plane area and described bent area, be provided with pixel, wherein, the density of the arrangement of the described pixel of described bent area is greater than the density of arrangement of the described pixel of described plane area.
Preferably, the area that is positioned at the described pixel of described plane area is greater than the area of the described pixel that is positioned at described bent area, and the area that is positioned at the described pixel of described plane area be positioned at described bent area described pixel area n doubly, wherein, the integer that n is >=2.
Preferably, be positioned at the width of described pixel of described plane area and length and be respectively the width of the described pixel that is positioned at described bent area and the n of length doubly.
Further preferably, be positioned at width and width that length is respectively the described pixel that is positioned at described bent area and 2 times of length of the described pixel of described plane area.
Preferably, the density of the arrangement of the described pixel in described bent area is constant, or the density of the arrangement of the described pixel in described bent area diminishes to the peripheral part near described plane area gradually from the core away from described plane area.
Preferably, in described pixel, include thin film transistor (TFT), the area of described thin film transistor (TFT) that is positioned at the described pixel of described plane area is more than or equal to the area of the described thin film transistor (TFT) of the described pixel that is positioned at described bent area.
Further preferably, the described thin film transistor (TFT) that is positioned at the described pixel of described plane area is amorphous silicon film transistor, and the described thin film transistor (TFT) that is positioned at the described pixel of described bent area is metal oxide thin-film transistor.
Preferably, described in this, flexible base, board also comprises many grid lines and many data lines arranged in a crossed manner in length and breadth, in described plane area, the grid of the described thin film transistor (TFT) in the described pixel of same row/column is electrically connected to same described grid line, and the source electrode of the described thin film transistor (TFT) in the described pixel of same column/row is electrically connected to same data line; In described bent area, the grid of the described thin film transistor (TFT) in the described pixel of same row/column is electrically connected to same described grid line, and the source electrode of the described thin film transistor (TFT) in the described pixel of same column/row is electrically connected to same data line.
Preferably, in pixel described in the n column/row of the suitable described bent area of the area of a described pixel with described plane area, wherein the source electrode of the source electrode of described thin film transistor (TFT) in the described pixel of a column/row and the described thin film transistor (TFT) in the described pixel of described plane area is electrically connected to same described data line, the source electrode of the described thin film transistor (TFT) in the described pixel of all the other n-1 column/rows is respectively electrically connected to respectively a root data line, the parallel branch that described subdata line is described data line and described subdata line and between data line, be provided with switching device described in this.
Preferably, described in this, flexible base, board also comprises gate drivers, source electrode driver and time schedule controller, and described gate drivers and described source electrode driver are electrically connected to described time schedule controller respectively; Described gate drivers is electrically connected to many described grid lines, and sweep signal drives the grid of the described thin film transistor (TFT) in described pixel by row/column by described grid line; Described source electrode driver is electrically connected to many described data lines, and data-signal is inputted the source electrode of the described thin film transistor (TFT) in described pixel by column/row by described data line.
A display device, comprises above-mentioned flexible base, board.
The invention has the beneficial effects as follows: flexible base, board provided by the invention, in plane area and bent area, adopt the technical scheme of non-isodensity picture element matrix, by using the pixel of variety classes or different size, scalloping and metamorphopsic distortion have been reduced, resolution and the sharpness of the display frame of solid-state flexible display screen bent area have been improved, resolution and the sharpness of display device have been improved, for people bring better visual experience simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the density of the flexible base, board midplane district of the embodiment of the present invention 1 and the arrangement of bent area pixel;
Fig. 2 is the flexible base, board midplane district of the embodiment of the present invention 1 and the schematic diagram of bent area pixel;
Fig. 3 is the flexible base, board midplane district of the embodiment of the present invention 1 and another schematic diagram of bent area pixel;
Fig. 4 is the schematic diagram of arranging of grid line, data line in the flexible base, board midplane district of the embodiment of the present invention 1 and bent area;
Wherein:
In figure: 1-pixel; 2-thin film transistor (TFT); 3-grid line; 4-gate drivers; 5-data line; 51-subdata line; 6-source electrode driver; 7-time schedule controller; 8-switching device; 10-plane area; 20-bent area.
Embodiment
For making those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, flexible base, board of the present invention and display device are described in further detail.
A flexible base, board, comprises plane area and bent area, in described plane area and described bent area, is provided with pixel, and wherein, the density of the arrangement of the described pixel of described bent area is greater than the density of arrangement of the described pixel of described plane area.
A display device, comprises above-mentioned flexible base, board.
Embodiment 1:
The present embodiment provides a kind of flexible base, board, as shown in Figure 1, this flexible base, board comprises plane area 10 and bent area 20, in plane area 10 and bent area 10, is provided with pixel 1, wherein, the density of the arrangement of the pixel 1 of bent area 20 is greater than the density of arrangement of the pixel 1 of plane area 10.
; technical conceive of the present invention is; in order to make the demonstration image of bent area 20 reach higher resolution and sharpness; can use picture element matrix not of the same race at plane area 10 and bent area 20; for example: in bent area 20; for image sharpness, there is higher requirement, use small size, high density picture element matrix; In plane area 10(non-bent area in other words), for image sharpness, require relatively lowly, use large scale, low-density picture element matrix.
A kind of preferred scheme is, the area that makes to be positioned at the pixel 1 of plane area 10 is greater than the area of the pixel 1 that is positioned at bent area 20, like this, and under the identical condition of area, 20 opposite planar districts 10, bent area have more pixel quantity, can improve the resolution of bent area 20.Meanwhile, in order to keep the regularity of picture element matrix to the arranging and driving of picture element matrix driver circuit, the area that is preferably placed at the pixel 1 of plane area 10 be positioned at bent area 20 pixel 1 area n doubly, wherein, the integer that n is >=2.Concrete, can make to be positioned at the width of pixel 1 of plane area 10 and length and be respectively and be positioned at the width of pixel 1 of bent area 20 and the n of length doubly.
For example, as shown in Figure 4, be positioned at width and width that length is respectively the pixel 1 that is positioned at bent area 20 and 2 times of length of the pixel 1 of plane area 10.Also the area that, is equivalent to interior four pixels 1 in bent area 20 at the area of the interior pixel 1 of plane area 10.
Meanwhile, for the ease of the preparation of flexible base, board, in the present embodiment, the density of the arrangement of the pixel 1 in bent area 20 is constant.
Certainly; along with further developing of IC layout design, even if it is misaligned also not get rid of picture element matrix, be also convenient to the situation of arranging and driving to picture element matrix driver circuit; according to technical conceive of the present invention, this modification and improvement also will be considered as protection scope of the present invention.
In order to realize, pixel is realized to the control that image shows, in each pixel 1, include thin film transistor (TFT) 2(Thin Film Transistor: be called for short TFT), the area of thin film transistor (TFT) 2 that is positioned at the pixel 1 of plane area 10 is more than or equal to the area of the thin film transistor (TFT) 2 of the pixel 1 that is positioned at bent area 20, thereby improve the picture element density of bent area 20 parts, realize high resolving power, high definition, and the demonstration of special graph pattern.
As shown in Figure 2, a kind of preferred scheme is: adopt the area (Fig. 2 shows the size of tri-pixels of RGB) of the pixel 1 that reduces bent area 20 parts, and in each pixel 1 of plane area 10 and bent area 20 parts, all use the thin film transistor (TFT) 2 of same homalographic; As shown in Figure 3, another kind of preferred scheme is: the area (Fig. 3 shows the size of tri-pixels of RGB equally) that adopts the pixel 1 that reduces bent area 20 parts, in the pixel 1 of bent area 20 parts, use than the little thin film transistor (TFT) 2 of thin film transistor (TFT) 2 areas in the pixel 1 of plane area 10 parts, to reduce the size of the pixel 1 of bent area 20 simultaneously.
Concrete, the thin film transistor (TFT) 2 that is positioned at the pixel 1 of plane area 10 is amorphous silicon film transistor (a-Si TFT), the thin film transistor (TFT) 2 that is positioned at the pixel 1 of bent area 20 is metal oxide thin-film transistor (a-IGZO TFT).Wherein, the advantage of a-Si TFT is that properties is comparatively balanced, color restoration capability is strong, response speed is good (30ms), contrast high (200:1), and through the development of nearly ten years, technology was very ripe, can guarantee the stability of plane area 10 display frames; And metal oxide thin-film transistor has advantages of that carrier mobility is high, so the very little thin film transistor (TFT) of available volume just can be realized the driving of pixel; Meanwhile, metal oxide thin-film transistor also has that characteristic uneven phenomenon is few, material and process costs reduces, technological temperature is low, can utilize the advantages such as coating process, transparent rate is high, band gap is large, and improves the resolution of bent area 20, improves display effect.
Or, thin film transistor (TFT) in the present embodiment can adopt low temperature polycrystalline silicon material, and drive integrated circult (IC) is integrated on flexible base, board, even makes system on glass (System on Glass, be called for short SOG), the advantage such as there is gentlier, thinner, power consumption is lower.Because the atomic rule of low temperature polycrystalline silicon is arranged, the high (10-300cm of carrier mobility
2/ Vs), can use the thin film transistor (TFT) of small volume to realize driving, increase glazed area, obtain higher brightness.
Adopt the pixel of above-mentioned preferred version and the thin film transistor (TFT) in pixel, the relatively setting of the thin film transistor (TFT) in pixel and pixel in flexible base, board in prior art, because the pixel quantity in the pixel quantity opposite planar district of bent area part is less, therefore cost is intimate identical, also can not cause too much influence to the integral production cost of flexible base, board.
As shown in Figure 4, in order to realize, pixel is realized to the driving that image shows, this flexible base, board also comprises many grid lines 3 arranged in a crossed manner in length and breadth and many data lines 5, in plane area 10, the grid of the thin film transistor (TFT) 2 in the pixel 1 of same row/column is electrically connected to same grid line 3, and the source electrode of the thin film transistor (TFT) 2 in the pixel 1 of same column/row is electrically connected to same data line 5; In bent area 20, the grid of the thin film transistor (TFT) 2 in the pixel 1 of same row/column is electrically connected to same grid line 3, and the source electrode of the thin film transistor (TFT) 2 in the pixel 1 of same column/row is electrically connected to same data line 5.In the present embodiment, with grid line 3, longitudinally arrange, data line 5 is laterally arranged as example, certainly, in exact arrangement process, grid line 3 is laterally arranged, and it is also same passable that data line 5 is longitudinally arranged.
Simultaneously, in order to realize generation and the distribution that drives signal, this flexible base, board also comprises gate drivers 4(Gate Driver), source electrode driver 6(Data Driver) and time schedule controller 7, gate drivers 4 and source electrode driver 6 are electrically connected to time schedule controller 7 respectively; Gate drivers 4 is electrically connected to many grid lines 3, and sweep signal drives the grid of the thin film transistor (TFT) 2 in pixel 1 by row/column by grid line 3; Source electrode driver 6 is electrically connected to many data lines 5, and data-signal is the source electrode by the thin film transistor (TFT) 2 in column/row input pixel 1 by data line 5.
Concrete, in the n column/row pixel 1 of the suitable bent area of the area of a pixel 1 with plane area 10, wherein the source electrode of the source electrode of thin film transistor (TFT) in the pixel 1 of a column/row and the thin film transistor (TFT) in the pixel of plane area 1 is electrically connected to same data line, the source electrode of the thin film transistor (TFT) in the pixel 1 of all the other n-1 column/rows is respectively electrically connected to respectively a root data line, between the parallel branch that subdata line is data line and subdata line and this data line, is provided with switching device.
In the present embodiment, as shown in Figure 4, in the suitable bent area 20 of the area of a pixel 1 with plane area 10, be provided with four (2 row * 2 row) pixels 1.In this 2 row pixel 1 of bent area 20, wherein the source electrode of the source electrode of thin film transistor (TFT) in the pixel 1 of a line and the thin film transistor (TFT) 2 in the pixel 1 of plane area 10 is electrically connected to same data line 5, the source electrode of the thin film transistor (TFT) 2 in the pixel 1 of another row is respectively electrically connected to respectively a root data line 51, and subdata line 51 is for being provided with switching device 8 between the parallel branch of data line 5 and subdata line 51 and this data line 5.Wherein, switching device 8 can be thin film transistor (TFT), and the grid of this thin film transistor (TFT) is electrically connected to time schedule controller 7, and source electrode is electrically connected to data line 5, and drain electrode is electrically connected to the source electrode of thin film transistor (TFT) 2 in pixel 1; Meanwhile, as can be seen from Fig. 4, the shorter data line of subdata line 51 for being extended out by data line 5, is mainly used in being electrically connected to bent area 20 with respect to the source electrode of the thin film transistor (TFT) in plane area more than 10 arrangements pixel out, realizes the input of data-signal.
Certainly, in the area of the suitable bent area 20 of the area of a pixel with plane area 10, odd number row/column pixel can be set, also even row/column pixel can be set, all adapt to grid line and the data line of in like manner analogizing and arrange.
; the arranging for the grid line 3 that drives, data line 5 at the flexible base, board in the present embodiment; aspect grid line (Gate Line): whole flexible base, board is adopted to arranging of non-isometric grid line 3; the high density pixel portion of bent area 20 parts adopts arranging of closely spaced grid line 3, and the low-density pixel portion of plane area 10 parts adopts the arranging of grid line 3 of large spacing; Aspect data line (Data Line): same data line 5 is electrically connected to the odd-numbered line of the low-density pixel portion of plane area 10 parts and the high density pixel portion of bent area 20 parts, and the even number line of the high density pixel portion of bent area 20 parts is electrically connected to subdata line 51.Control as for the different rows pixel of the high density pixel portion of bent area 20 parts, can be realized and being switched by time schedule controller 7.
Here it should be understood that, according to the arrangement of the flexible base, board midplane district of the present embodiment and bent area pixel, to its driving, can there is various ways, for example: by row/column, drive or drive every row/column, as long as can realize the distribution of view data or video data, make display screen to carry out correct demonstration according to the image data source of setting or video data source, do not limit here.
Embodiment 2:
The present embodiment provides a kind of flexible base, board, is with the difference of flexible base, board in embodiment 1, and the density of the arrangement of the pixel 1 in the present embodiment in bent area 20 diminishes to the peripheral part near plane area 10 gradually from the core away from plane area 10., in the present embodiment, the density of the arrangement of the pixel 1 of bent area 20 parts is not constant yet.
Embodiment 3:
The present embodiment provides a kind of display device, this display device embodiment 1 or the exemplified flexible base, board of embodiment 2.
Wherein, the pixel in flexible base, board can comprise self luminous OLED device, also can comprise coordinating with backlight realizing the liquid crystal that image shows.
This display device comprises any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument, smart card, intelligent label.
The invention provides a kind of at flexible base, board, in plane area and bent area, adopt the technical scheme of non-isodensity picture element matrix, by using the pixel of variety classes or different size, scalloping and metamorphopsic distortion have been reduced, resolution and the sharpness of the display frame of solid-state flexible display screen bent area have been improved, resolution and the sharpness of display device have been improved, for people bring better visual experience simultaneously.
Be understandable that, above embodiment is only used to principle of the present invention is described and the illustrative embodiments that adopts, yet the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (11)
1. a flexible base, board, comprises plane area and bent area, in described plane area and described bent area, is provided with pixel, it is characterized in that, the density of the arrangement of the described pixel of described bent area is greater than the density of arrangement of the described pixel of described plane area.
2. flexible base, board according to claim 1, it is characterized in that, the area that is positioned at the described pixel of described plane area is greater than the area of the described pixel that is positioned at described bent area, and the area that is positioned at the described pixel of described plane area be positioned at described bent area described pixel area n doubly, wherein, the integer that n is >=2.
3. flexible base, board according to claim 2, is characterized in that, is positioned at the width of described pixel of described plane area and length and is respectively the width of the described pixel that is positioned at described bent area and the n of length doubly.
4. flexible base, board according to claim 3, is characterized in that, is positioned at width and width that length is respectively the described pixel that is positioned at described bent area and 2 times of length of the described pixel of described plane area.
5. flexible base, board according to claim 3, it is characterized in that, the density of the arrangement of the described pixel in described bent area is constant, or the density of the arrangement of the described pixel in described bent area diminishes to the peripheral part near described plane area gradually from the core away from described plane area.
6. flexible base, board according to claim 5, it is characterized in that, in described pixel, include thin film transistor (TFT), the area of described thin film transistor (TFT) that is positioned at the described pixel of described plane area is more than or equal to the area of the described thin film transistor (TFT) of the described pixel that is positioned at described bent area.
7. flexible base, board according to claim 6, it is characterized in that, the described thin film transistor (TFT) that is positioned at the described pixel of described plane area is amorphous silicon film transistor, and the described thin film transistor (TFT) that is positioned at the described pixel of described bent area is metal oxide thin-film transistor.
8. flexible base, board according to claim 6, it is characterized in that, described in this, flexible base, board also comprises many grid lines and many data lines arranged in a crossed manner in length and breadth, in described plane area, the grid of the described thin film transistor (TFT) in the described pixel of same row/column is electrically connected to same described grid line, and the source electrode of the described thin film transistor (TFT) in the described pixel of same column/row is electrically connected to same data line; In described bent area, the grid of the described thin film transistor (TFT) in the described pixel of same row/column is electrically connected to same described grid line, and the source electrode of the described thin film transistor (TFT) in the described pixel of same column/row is electrically connected to same data line.
9. flexible base, board according to claim 8, it is characterized in that, in pixel described in the n column/row of the suitable described bent area of the area of a described pixel with described plane area, wherein the source electrode of the source electrode of described thin film transistor (TFT) in the described pixel of a column/row and the described thin film transistor (TFT) in the described pixel of described plane area is electrically connected to same described data line, the source electrode of the described thin film transistor (TFT) in the described pixel of all the other n-1 column/rows is respectively electrically connected to respectively a root data line, the parallel branch that described subdata line is described data line, and described subdata line and be provided with switching device between data line described in this.
10. flexible base, board according to claim 9, is characterized in that, described in this, flexible base, board also comprises gate drivers, source electrode driver and time schedule controller, and described gate drivers and described source electrode driver are electrically connected to described time schedule controller respectively; Described gate drivers is electrically connected to many described grid lines, and sweep signal drives the grid of the described thin film transistor (TFT) in described pixel by row/column by described grid line; Described source electrode driver is electrically connected to many described data lines, and data-signal is inputted the source electrode of the described thin film transistor (TFT) in described pixel by column/row by described data line.
11. 1 kinds of display device, is characterized in that, described display device comprises the flexible base, board described in claim 1-10 any one.
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