CN102542927A - Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen - Google Patents
Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen Download PDFInfo
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Abstract
The invention provides a device11 for removing display pixel particle effect, which comprises an optical lens device 01 and a scattering device 02. The optical lens device 01 covers the front of a display pixel group 12 of an OLED (organic light emitting diode) display screen, the scattering device 02 is arranged in front of the optical lens device 01, and the optical lens device 01 is used for refracting light emitted from the display pixel group 12 to the surrounding. The invention further provides an OLED display screen, which comprises at least one OLED display module 13, a signal driving circuit 14, a power source 15, a fixing bar 16, a backing plate 17 and the device 11 for removing the display pixel particle effect. By the device for removing display pixel particle effect, the pixel fill rate is increased, the display pixel particle effect of the OLED display screen is removed, and excellent visual experience can be brought to viewers.
Description
Technical field
The present invention relates to a kind of device and OLED display screen of eliminating the display pixel grain effect, belong to the display technique field.
Background technology
OLED super large resolution display wall provides a unified information display platform, has a wide range of applications in electric power, traffic, the energy, telecommunications, military affairs and public safety, enterprise, broadcasting and TV etc. at present.
OLED is a self-luminescent material; Need not to use backlight; Simultaneously the visual angle is wide, image quality is even, reaction velocity is fast, be prone to colorize, with simple drive circuit can reach luminous, processing procedure simply, can be made into deflection formula panel; Meet compact principle, range of application belongs to the small-medium size panel.The demonstration aspect: active illuminating, angular field of view are big; Response speed is fast, image stabilization; Brightness height, rich color, resolution height.Condition of work: driving voltage is low, energy consumption is low, can be complementary with solar cell, integrated circuit etc.Wide adaptability: adopt glass substrate can realize that large-area flat-plate shows; As doing substrate, can process folding display with flexible material.
It is that the display pixel that 2 * 2 pel arrays or more pel array are formed is formed a team that the OLED display screen adopted at present; Or title display pixel groups (light-emitting zone); Because the needs of aspects such as technology are reserved certain wiring zone, this subregion was a non-luminous region between each pixel was formed a team.Therefore fine and smooth not enough on the fineness of display pixel; Possess stronger granular sensation, as shown in Figure 1, from figure, can see; There is certain clearance between the adjacent display pixel groups; Wherein, l is the length of side of display pixel groups light-emitting zone, and l ' is the non-luminous region width between the adjacent display pixels group light-emitting zone.The existence of non-luminous region makes that the fineness of display pixel is fine and smooth inadequately, has stronger granular sensation, causes display screen to produce granular effect (comprising the palisade effect) etc., thereby has influenced the vision impression.
Summary of the invention
The object of the present invention is to provide a kind of device and OLED display screen of eliminating the display pixel grain effect, solve the granular effect problem that the gap between the display pixel groups causes.
A kind of device of eliminating the display pixel grain effect comprises: cover the preceding optical frames device of OLED display screen display pixel groups, and be arranged on the scattering device before the said optical frames device;
Wherein, the said optical frames device light that is used for respectively said display pixel groups is sent to around reflect.
A kind of OLED display screen comprises at least one OLED display module and signal drive circuit, power supply, fixed strip and back shrouding, also comprises the device of above-mentioned elimination display pixel grain effect.
Compared with prior art, technology of the present invention is luminous through optical frames device expansion pixel groups, the light that respectively display pixel groups is sent to around reflect; Cover the gap between the display pixel groups, improved the pixel filling rate, through scattering device light has been carried out scattering again; Strengthen the uniformity coefficient and the contrast of OLED display screen; Make light softer, thereby eliminate OLED display screen display pixel grain effect, make the beholder obtain splendid visual enjoyment.
Description of drawings
Fig. 1 is the synoptic diagram in the gap between the adjacent display pixel groups 12 of OLED display screen;
Fig. 2 and shown in Figure 3 be the structural representation of the device of elimination display pixel grain effect of the present invention;
Fig. 4 is the 3-D view of the plano-convex lens 011 among the embodiment;
Fig. 5 is plano-convex lens 011 synoptic diagram corresponding with display pixel groups among the embodiment;
Fig. 6 is the A-A cut-open view among Fig. 5;
Fig. 7 is the structural representation of the optical microstructures LGP 012 among the embodiment;
Fig. 8 is the A-A cut-open view among Fig. 7;
Fig. 9 is the synoptic diagram that the optical microstructures LGP 012 among the embodiment expands display pixel;
Figure 10 is the light path principle figure that the optical microstructures LGP 012 among the embodiment expands display pixel;
Figure 11 is the structural representation of an embodiment of OLED display screen of the present invention;
Figure 12 is the structural representation that the OLED module is connected with driving circuit.
Embodiment
Below in conjunction with accompanying drawing and embodiment the device 11 of elimination display pixel grain effect of the present invention is described in detail.
The device 11 of elimination display pixel grain effect of the present invention comprises: cover the optical frames device 01 before the OLED display screen display pixel groups 12, and be arranged on the scattering device 02 before the said optical frames device 01; Wherein, said optical frames device 01 light that is used for respectively said display pixel groups 12 is sent to around reflect.
Referring to Fig. 2 and shown in Figure 3 be the structural representation of the device 11 of elimination display pixel grain effect of the present invention; Wherein, Fig. 2 is along the A-A cut-open view among Fig. 1, and Fig. 3 is along the B-B cut-open view among Fig. 1; From figure, can see; The device 11 of elimination display pixel grain effect of the present invention mainly be utilize light that optical frames device 01 sends OLED display screen display pixel groups 12 to around reflect, thereby make the image of the display pixel groups 12 that the beholder watches obtain expansion, covered the formed dark space, space between the display pixel groups 12; Image in beholder's vision then is continuous, has reached the purpose of eliminating the grain effect of display pixel.
For scattering device 02; Be mainly used in light is carried out scattering; Strengthen the contrast of OLED display screen, make light softer, can adopt the frosted glass of simple scattering process; Contain the diffuser screen of micro-scattering particle, or contain the optical screen (comprising black streaking screen, cylindrical mirror screen or beaded glass screen) of micro optical structure.
For optical frames device 01, be mainly used in respectively light that display pixel groups 12 is sent to around reflect, below enumerate two embodiment of optical frames device 01.
Embodiment one:
Optical frames device 01 comprises plano-convex lens 011 array before all display pixel groups 12 that cover respectively before the OLED display screen, and referring to shown in Figure 4, Fig. 4 is the 3-D view of plano-convex lens 011; The bottom surface of this plano-convex lens 011 is square, and the length of side is L, and edge thickness is H; Wherein, L=l+l ', l are display pixel groups 12 effective light-emitting zones, and l ' is the spacing between the adjacent display pixels.The bottom center of each plano-convex lens 011 is corresponding with the center of display pixel groups 12, referring to shown in Figure 5, and the corresponding plano-convex lens 011 of each dashed rectangle among the figure, all display pixel groups 12 corresponding plano-convex lens 011 arrays constitute whole optical devices.
Referring to shown in Figure 6, Fig. 6 is the A-A cut-open view among Fig. 5, the ab of display pixel groups 12, cd; After the light that sends reflects through plano-convex lens 011; In beholder's vision, the image of being seen is respectively a ' b ', c ' d ', realizes the expansion of display pixel groups 12; For plano-convex lens 011 is provided with suitable radius-of-curvature; Can make b ', c ' just be connected, promptly expansion just covers the space between the display pixel groups 12, has so just eliminated the grain effect (comprising the palisade effect) between the display pixel.
In the middle of actual design; When then added power of lens is β=L/l; The picture that display pixel groups 12 imagings can just form with adjacent display pixel groups 12 is connected, and according to the thickness of display pixel groups 12 to display screen, the radius-of-curvature of suitable plano-convex lens 011 is set.
For example, for the display pixel groups 12 (2X2 pel array) of the specification of generally using at present as 2.22mm * 2.22mmOLED display screen,, l=2.22mm; L '=1.45mm, L=3.67mm is according to the thickness of display pixel groups 12 to display screen; Display pixel groups 12 is 2mm to the distance of plano-convex lens 011, β=1.65, and the bottom surface length of side of plano-convex lens 011 is L=3.67mm; Edge thickness H＞0.4mm chooses H=1mm, and then radius-of-curvature is 10mm.
In addition, optical frames device 01 can also comprise the lens of other type, like the curved moon, biconvex lens etc., also can be the identical or close Fresnel lens of focal length etc. other have the optical device of equal refraction, amplification.
Embodiment two:
Optical frames device 01 comprises optical microstructures LGP 012 array before all display pixel groups 12 that cover respectively before the OLED display screen; Referring to shown in Figure 7; Optical microstructures LGP 012 comprises LGP 0121 and prism 0122; The bottom surface of LGP 0121 is square, and the bottom center of incident side is corresponding with the center of display pixel groups 12, and the length of side is l (being the length of side of display pixel groups 12 light-emitting zones); Bright dipping side at LGP 0121; On the direction (dotted line direction among the figure) of extending along the line of the center of LGP 0121 and four drift angles, be respectively provided to a few row prism 0122, be used for the light of said display pixel groups 12 to around refraction; The side of the incident side of every row prism 0122 is connected with LGP 0121, and every row prism 0122 is arranged placement in order along the direction that the line of the center of LGP 0121 and four jiaos extends.
A kind of embodiment is the straight cylinder that is shaped as of said every row prism 0122; Every row prism 0122 is vertical with said line; The planform of the prism that prism 0122 order on each direction is identical is identical; Along the transversely arranged in order placement of direction that the line of the center of LGP 0121 and four jiaos extends, all prisms 0122 constitute four prism arrays with the direction of four jiaos line extension along the center of LGP 0121 respectively.
Referring to shown in Figure 8; Fig. 8 is the A-A cut-open view among Fig. 7; The principal section of the every row prism 0122 on the LGP is rendered as the thin serrate in thick center, outside, and the principal section of each prism is identical, and is perhaps close; The prism that is provided with on the LGP 0121 is many more, can be so that the image in beholder's vision is finer and smoother.
Referring to shown in Figure 9; As can be seen from the figure; The Oefg of display pixel groups 12 partly is a pixel in the pel array; After being provided with optical microstructures LGP 012; Be about to light that display pixel groups 12 sends toward around reflect, in beholder's vision, the Oefg image that seen this moment is respectively Oe ' f ' g '; Realize the expansion of display pixel groups 12; Can make the image of the display pixel groups 12 between adjacent just be connected for prism is provided with suitable drift angle
, promptly expand part and just cover the space between the display pixel groups 12, so just eliminate the grain effect (comprising the palisade effect) between the display pixel groups 12.
Concrete principle of work is referring to shown in Figure 10, and the light that display pixel groups 12 is sent gets into from the incident side of LGP 0121, enters into prism from the bright dipping side then; Two faces at prism produce deviation twice; After coming out in the bright dipping side, produce effect to refraction all around, get into beholder's sight line after 02 scattering of light process scattering device; The image of the display pixel groups 12 in beholder's vision has obtained expansion, fills up whole display pixel groups 12 spaces.
For example; For the display pixel groups 12 (2 * 2 pel array) of the specification of generally using at present as 2.22mm * 2.22mmOLED display screen; Optical microstructures LGP 012 can be set comprise 10 prisms that the principal section is identical; The drift angle of prism principal section
is the bottom surface length of side s=0.95mm of prism then; The side length of side h=0.111mm of incident side, the distance between optical microstructures LGP 012 and the scattering device 02 can be set to t=1.07mm.
Below in conjunction with embodiment OLED display screen of the present invention is described in detail.
A kind of OLED display screen comprises at least one OLED display module 13 and signal drive circuit 14, power supply 15, fixed strip 16 and back shrouding 17, also comprises the device 11 like above-mentioned elimination display pixel grain effect.
In addition, can also comprise mask 18, this mask 18 is used for fixing the device 11 of eliminating the display pixel grain effect, comprises simple stilt, sticks on high strength thin slice or the splicing tape of screen side etc.
In the practical implementation, shown in figure 11, the device 11 and mask 18 of foremost ground floor (towards the beholder) for eliminating the display pixel grain effect; The second layer is the OLED module, and wherein, OLED display module 13 comprises that PM-OLED shows or the AM-OLED display module; The 3rd layer is fixed strip 16, and the OLED matrix module is fixed on the mask 18; The 4th layer is driving circuit, and it is made up of PCB wiring board and relevant control circuit, and its PCB wiring board is fixed on the fixed strip 16; Layer 5 is a system power supply 15, and it is positioned at the driving circuit top, also is fixed on the fixed strip 16 of screen frame; Layer 6 is a back shrouding 17.
Shown in figure 12, the lead-in wire of OLED module is bound the district, is connected to through the FPC flexible cord on the wiring board of driving circuit.
Need to prove that the device 11 of the elimination display pixel grain effect of ground floor and the OLED display module 13 of the second layer can combine and produce, and need not mask 18 this moment.
Technology of the present invention has solved outside the palisade effect of dot matrix display technique, the granular effect except improving the pixel filling rate, has also eliminated the piece influence of OLED display module 13 splicings.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (9)
1. a device of eliminating the display pixel grain effect is characterized in that, comprising: cover the preceding optical frames device of OLED display screen display pixel groups, and be arranged on the scattering device before the said optical frames device;
Wherein, the said optical frames device light that is used for respectively said display pixel groups is sent to around reflect.
2. the device of elimination display pixel grain effect according to claim 1 is characterized in that, said scattering device comprises: frosted glass contains the diffuser screen of micro-scattering particle, or contains the optical screen of micro optical structure.
3. the device of elimination display pixel grain effect according to claim 2 is characterized in that, said optical frames device comprises the plano-convex lens array before all display pixel groups that cover respectively before the said OLED display screen;
The bottom surface of said plano-convex lens is square, and bottom center is corresponding with the center of display pixel groups.
4. the device of elimination display pixel grain effect according to claim 2 is characterized in that, said optical frames device comprises the optical microstructures LGP array before all display pixel groups that cover respectively before the said OLED display screen;
The bottom surface of said optical microstructures LGP is square; Bottom center is corresponding with the center of display pixel; In the bright dipping side of LGP, on the direction of extending along the line of the center of LGP and four drift angles, be respectively provided to a few row prism; The side of the incident side of prism is connected with LGP, and every row prism is arranged placement in order along the direction that the line of the center of LGP and four jiaos extends.
5. the device of elimination display pixel grain effect according to claim 4; It is characterized in that; Said prism be shaped as straight cylinder; The said prism of every row is vertical with said line, and the planform of the prism that prism on each direction order is identical is identical, arranges placement in order along the center and the direction of four jiaos line extension of LGP.
6. an OLED display screen comprises at least one OLED display module and signal drive circuit, power supply, fixed strip and back shrouding, it is characterized in that, also comprises the device like each described elimination display pixel grain effect of claim 1 to 5.
7. OLED display screen according to claim 6 is characterized in that, said OLED display module comprises: PM-OLED display module or AM-OLED display module.
8. OLED display screen according to claim 6 is characterized in that, also comprises mask, and said mask is used for fixing the device of said elimination display pixel grain effect.
9. OLED display screen according to claim 8 is characterized in that, said mask comprises: the high strength thin slice or the splicing tape that stick on the screen side.
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| CN201210004339.XA CN102542927B (en) | 2012-01-06 | 2012-01-06 | Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen |
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| CN201210004339.XA CN102542927B (en) | 2012-01-06 | 2012-01-06 | Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen |
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| CN103489374A (en) * | 2013-08-13 | 2014-01-01 | 江苏清投视讯科技有限公司 | Multi-screen spliced seamless display screen |
| CN105679193A (en) * | 2016-03-16 | 2016-06-15 | 深圳市艾比森光电股份有限公司 | Method for improving display effect of LED display screen and display structure |
| CN105842906A (en) * | 2016-05-27 | 2016-08-10 | 厦门天马微电子有限公司 | Display panel and head-mounted display device comprising same |
| CN106020431A (en) * | 2014-12-17 | 2016-10-12 | 宏达国际电子股份有限公司 | Head-mounted electronic device and display thereof |
| CN106409153A (en) * | 2016-09-27 | 2017-02-15 | 昆山工研院新型平板显示技术中心有限公司 | A display device and a preparation method therefor |
| CN108335636A (en) * | 2018-03-19 | 2018-07-27 | 蒋翔东 | The rimless splicing display device of optics |
| CN110658629A (en) * | 2018-06-28 | 2020-01-07 | 苹果公司 | Electronic device with multi-element display illumination system |
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Address after: 510670 Guangdong city of Guangzhou province Kezhu Guangzhou high tech Industrial Development Zone, Road No. 233 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510663 Guangzhou province high tech Industrial Development Zone, Guangdong, Cai road, No. 6, No. Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |