CN104750326A - Projection-type capacitive touch screen - Google Patents
Projection-type capacitive touch screen Download PDFInfo
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- CN104750326A CN104750326A CN201310750317.2A CN201310750317A CN104750326A CN 104750326 A CN104750326 A CN 104750326A CN 201310750317 A CN201310750317 A CN 201310750317A CN 104750326 A CN104750326 A CN 104750326A
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Abstract
The invention relates to a projection-type capacitive touch screen. The touch screen comprises a substrate, driving electrodes, inductive electrodes and shield electrodes. The substrate comprises an upper surface, the driving electrodes and the inductive electrodes are arranged on the upper surface, gaps are formed between the driving electrodes and the inductive electrodes, and the shield electrodes arranged in the gaps are used for shielding mutual-inductance capacitance formed between the driving electrodes and the inductive electrodes. The height, perpendicular to the direction of the upper surface, of each shield electrode is larger than the thickness of one side edge, close to the shield electrode, of each of the corresponding driving electrode and the corresponding inductive electrode. By the projection-type capacitive touch screen, signal to noise ratios of touch signals can be increased, and detection accuracy can be improved.
Description
Technical field
The present invention relates to a kind of touch-screen, particularly a kind of projection-type capacitive touch screen.
Background technology
Along with the development of development of Mobile Internet technology, mobile terminal universal, as the projection-type capacitive touch screen of the interactive device of mobile terminal, can carry out multi-point touch because it has, transmittance high and obtain applying more and more widely.
Along with technical development, industry proposes more and more higher requirement to projection-type capacitive touch screen, one of them important requirement is the signal to noise ratio (S/N ratio) of the touch signal improving projection-type capacitive touch screen, thus improves accuracy of detection and the detection sensitivity of projection-type capacitive touch screen.For this reason, the applying date be on November 30th, 2009 publication number be that the Chinese patent application of CN102081484A discloses a kind of formula of penetrating capacitance touch screen that effectively can improve the signal to noise ratio (S/N ratio) of touch signal.Patent document disclosed in China Intellectual Property Office is referred to about the concrete technology contents of formula of penetrating capacitance touch screen disclosed in described patented claim.Technology contents in this patent document is referred in this patent simultaneously, as the content that this patent is recorded.
Refer to Fig. 1, Fig. 1 penetrates formula capacitive touch screen structure schematic diagram disclosed in CN102081484A Chinese patent application.Penetrate formula capacitance touch screen 6 disclosed in CN102081484A Chinese patent application, it comprises substrate 61, is arranged on the drive electrode 62 on surface, substrate 61 side and induction electrode 63.And the guarded electrode 64 be arranged between induction electrode 63 and drive electrode 62.Described guarded electrode 64 ground connection or the fixing electromotive force of electrical connection one, thus described guarded electrode 64 can the Inductance and Capacitance of formation between shield guard electrode 62 and induction electrode 63.
According to the introduction of CN102081484A Chinese patent application, the Inductance and Capacitance of the formation between drive electrode 62 and induction electrode 63 is the major reason that the noise signal of projection-type capacitive touch screen produces, therefore, guarded electrode 64 is set between induction electrode 63 and drive electrode 62, thus the Inductance and Capacitance of formation between shield guard electrode 62 and induction electrode 63, just can reach the object of the signal to noise ratio (S/N ratio) of the touch signal improving projection-type capacitive touch screen.But the inventor of patent of the present invention finds after research, the projection-type capacitive touch screen of prior art also needs further improvement.
Summary of the invention
The object of this invention is to provide a kind of projection-type capacitive touch screen, the problem lower with the signal to noise ratio (S/N ratio) of the touch signal solving the projection-type capacitive touch screen of prior art, detection sensitivity is not high enough.
For solving the problem, the invention provides a kind of projecting type capacitor formula touch-screen, described touch-screen comprises substrate, drive electrode, induction electrode and guarded electrode, described substrate comprises upper surface, drive electrode and induction electrode are arranged on the upper surface, have gap between described drive electrode and described induction electrode, guarded electrode arranges described gap, and described guarded electrode is in order to shield the Inductance and Capacitance formed between described drive electrode and described induction electrode; Described guarded electrode is greater than the thickness of described drive electrode and contiguous described guarded electrode one lateral edges of described induction electrode at the height in vertical described upper surface direction.
The inventor of patent of the present invention finds after research: in prior art, described guarded electrode is mainly through being arranged between drive electrode and induction electrode, thus stop the electric field line formed between drive electrode and induction electrode, thus reach the Inductance and Capacitance formed between shield guard electrode and induction electrode.But, in prior art, guarded electrode usually and drive electrode or induction electrode formed in same deposition-etch technique, thus make the height of guarded electrode substantially equal with the thickness of drive electrode or induction electrode, therefore, guarded electrode can only block at the most drive electrode and induction electrode side right opposite amass; So, can also be amassed by described right opposite between drive electrode and induction electrode beyond space formed electric field.Make still can form larger Inductance and Capacitance between drive electrode or induction electrode.
Compared with prior art, in the present invention, the height of guarded electrode is made to be greater than the thickness of described drive electrode and contiguous described guarded electrode one lateral edges of described induction electrode, thus guarded electrode can be blocked amass larger area than the right opposite of drive electrode or induction electrode side, thus the Inductance and Capacitance between drive electrode and induction electrode is reduced, and then the signal to noise ratio (S/N ratio) of the touch signal of raising projection-type capacitive touch screen of the present invention, improve detection sensitivity.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing projection-type capacitive touch screen.
Fig. 2 is the cross-section structure enlarged diagram of projection-type capacitive touch screen shown in Fig. 1 along II-II.
Fig. 3 is the planar structure schematic diagram of projection-type capacitive touch screen first embodiment of the present invention.
Fig. 4 is the cross-section structure enlarged diagram of projection-type capacitive touch screen shown in Fig. 3 along IV-IV line.
Fig. 5 is the cross-section structure enlarged diagram of projection-type capacitive touch screen second embodiment of the present invention.
Fig. 6 is the cross-section structure enlarged diagram of projection-type capacitive touch screen of the present invention 3rd embodiment.
Fig. 7 is the cross-section structure enlarged diagram of projection-type capacitive touch screen of the present invention 4th embodiment.
Fig. 8 is the planar structure schematic diagram of projection-type capacitive touch screen of the present invention 5th embodiment.
Embodiment
Refer to Fig. 2, Fig. 2 is the cross-section structure enlarged diagram of the projection-type capacitive touch screen of prior art shown in Fig. 1 along II-II line.The inventor of patent of the present invention finds after research, in prior art, described guarded electrode 64 is mainly through being arranged between drive electrode 62 and induction electrode 63, thus stop the electric field line 66 formed between drive electrode 62 and induction electrode 63, and then reach the Inductance and Capacitance formed between shield guard electrode 62 and induction electrode 63.But, in prior art, guarded electrode 64 usually and drive electrode 62 or induction electrode 63 formed in same deposition-etch technique, thus make the height of guarded electrode 64 substantially equal with the thickness of drive electrode 62 or induction electrode 63, therefore, guarded electrode 64 can only block at the most drive electrode 62 and induction electrode 63 side right opposite amass; So, can also be amassed by described right opposite between drive electrode 62 and induction electrode 63 beyond space form electric field.Make still can form larger Inductance and Capacitance between drive electrode 62 or induction electrode 63.Make that the signal to noise ratio (S/N ratio) of the touch signal of the projection-type capacitive touch screen 6 of prior art is lower, detection sensitivity is not high enough.For solving the problem that signal to noise ratio (S/N ratio) is lower, detection sensitivity is not high enough of the touch signal of the projection-type capacitive touch screen of prior art prior art, the present invention proposes a kind of projecting type capacitor formula touch-screen.Described touch-screen comprises substrate, drive electrode, induction electrode and guarded electrode, described substrate comprises upper surface, drive electrode and induction electrode are arranged on the upper surface, between described drive electrode and described induction electrode, there is gap, guarded electrode arranges described gap, and described guarded electrode is in order to shield the Inductance and Capacitance formed between described drive electrode and described induction electrode; Described guarded electrode is greater than the thickness of described drive electrode and contiguous described guarded electrode one lateral edges of described induction electrode at the height in vertical described upper surface direction.
Compared with prior art, projection-type capacitive touch screen of the present invention, the height of guarded electrode is made to be greater than the thickness of described drive electrode and contiguous described guarded electrode one lateral edges of described induction electrode, thus guarded electrode can be blocked amass larger area than the right opposite of drive electrode or induction electrode side, thus the Inductance and Capacitance between drive electrode and induction electrode is reduced, and then the signal to noise ratio (S/N ratio) of the touch signal of raising projection-type capacitive touch screen of the present invention, improve detection sensitivity.
Below in conjunction with concrete embodiment, technical scheme of the present invention is described in detail; For making the term meaning across very well in application documents, first some terms are defined: in the description process of application documents, " higher than " be that an original paper is farther compared with the distance of another original paper opposing substrate for expressing two original papers being arranged in substrate the same side; " lower than " be that an original paper is nearer compared with the distance of another original paper opposing substrate for expressing two original papers being arranged in substrate the same side; " primary depositing etching technics " refers to and in substrate, deposits layer of material layer and etch described material layer to form a technological process of corresponding material layer pattern by light shield technique.
Please also refer to Fig. 3 and Fig. 4, Fig. 3 is the planar structure schematic diagram of projection-type capacitive touch screen first embodiment of the present invention.Fig. 4 is the cross-section structure enlarged diagram of projection-type capacitive touch screen 1 shown in Fig. 3 along IV-IV line.Described projection-type capacitive touch screen 1 comprises substrate 11, drive electrode 12, induction electrode 13 and guarded electrode 14.Described substrate 11 has the upper surface and lower surface that are oppositely arranged.Described drive electrode 12, described induction electrode 13 and described guarded electrode 14 are all arranged on the upper surface.Described drive electrode 12 and described induction electrode 13 are disposed on the upper surface of described substrate 11.Described guarded electrode 14 is arranged on the gap between described drive electrode 12 and described induction electrode 13.Described guarded electrode 14 is greater than the thickness L of described drive electrode 12 and described induction electrode 13 in the height H in the direction of vertical described substrate 11 upper surface.Because described guarded electrode 14 has higher height, therefore, described guarded electrode 14 can be blocked and amass larger area than the right opposite of drive electrode 12 and induction electrode 13 side, thus the Inductance and Capacitance between described drive electrode 12 and described induction electrode 13 is reduced.Optionally, when the thickness of described drive electrode 12 and described induction electrode 13 is uneven, described guarded electrode 14 is greater than the thickness L of described drive electrode 12 and contiguous described guarded electrode 14 1 lateral edges of described induction electrode 13 in the height H in vertical described substrate 11 upper surface direction.
In the present embodiment, described drive electrode 12, described induction electrode 13 and described guarded electrode 14 are set directly at the upper surface of described substrate 11.So, the side that described guarded electrode 14 deviates from substrate 11 deviates from the first surface of described substrate 11 higher than described drive electrode 12, also deviates from the 3rd surface of described substrate 11 higher than described induction electrode 13 simultaneously.And described guarded electrode 14 in the face of the side of described substrate 11 and described drive electrode 12 in the face of the second surface of described substrate 11 and described induction electrode 13 fair in the face of the 3rd surface of described substrate 11.Described first surface, second surface, the 3rd surface and the 4th surface, when the thickness of described drive electrode 12 and described induction electrode 13 is uneven, what refer to is surface in contiguous described guarded electrode 14 1 edge area of described drive electrode 12 and described induction electrode 13.So, the right opposite of described guarded electrode 14 side and described drive electrode 12 side of blocking described induction electrode 13 completely amass and extend to right opposite amass outside region; Arrange the closeest because the side of induction electrode 13 and the right opposite of described drive electrode 12 side amass the electric field line that region formed again; Thus described guarded electrode 14 can shield the Inductance and Capacitance formed between described induction electrode 13 and described drive electrode 12 better.
Preferably, in this embodiment, described touch-screen 1 comprises the drive electrode 12 of multiple one-tenth matrix arrangement and the induction electrode 13 of many strips.Every bar induction electrode 13 is arranged between adjacent rows drive electrode 12.Described guarded electrode 13 is grown up strip.Described guarded electrode 13 is arranged between adjacent a line drive electrode 12 and an induction electrode 13.Optionally, described drive electrode 12 and described induction electrode 13 are being formed with in a deposition-etch technique; Described guarded electrode 14 is formed by one or many deposition-etch technique.Preferably, described drive electrode 12 and described induction electrode 13 are formed respectively in twice different deposition-etch technique; The material layer superposition that described guarded electrode 14 is formed by the twice deposition-etch technique forming described drive electrode 12 and described induction electrode 13 is formed, thus makes the height H of described shielding electrode layer 14 be described drive electrode 12 and described induction electrode 13 thickness sum.So, in the process manufacturing described projection-type capacitive touch screen 1, without the need to increasing the deposition-etch technique once forming described guarded electrode 14 in addition, can raise the efficiency.
Refer to Fig. 5, Fig. 5 is the cross-section structure enlarged diagram of projection-type capacitive touch screen second embodiment of the present invention.The projection-type capacitive touch screen of described second embodiment is substantially the same with the projection-type capacitive touch screen 1 of described first embodiment, its difference is: the projection-type capacitive touch screen of described second embodiment comprises an insulation course 25 further, and described insulation course 25 is arranged on the upper surface of substrate 21.Drive electrode 22, induction electrode 23 and guarded electrode 24 are arranged on the side that described insulation course 25 deviates from described substrate 21.The surface that described insulation course 25 deviates from described substrate 21 includes depression.Described depression is located at the region of corresponding described guarded electrode 24.Described induction electrode 23 and described guarded electrode 24 are set directly at the surface that described insulation course 25 deviates from described substrate 21.Described guarded electrode 24 is arranged on described insulation course 25 to deviate from the surface of described substrate 21 and extends in corresponding depression.Preferably, the side that described guarded electrode 24 deviates from described substrate 21 maintains an equal level or deviates from the surface of described substrate 21 higher than described drive electrode 22 and described induction electrode 23.Compared with the projection-type capacitive touch screen 1 of the first embodiment, the projection-type capacitive touch screen of the second embodiment, makes contiguous described substrate 21 side of guarded electrode 24 deviate from the surface of described substrate 21 lower than described drive electrode 22 and described induction electrode 23.Thus stop the electric field line that drive electrode 22 and induction electrode 23 are formed in adjacent substrates 21 1 side region.Form Inductance and Capacitance between further minimizing drive electrode 22 and induction electrode 23, thus improve signal to noise ratio (S/N ratio), improve detection sensitivity.
Refer to Fig. 6, Fig. 6 is the cross-section structure enlarged diagram of projection-type capacitive touch screen of the present invention 3rd embodiment.The projection-type capacitive touch screen of described 3rd embodiment is substantially the same with the projection-type capacitive touch screen of described second embodiment, and its difference is: the projection-type capacitive touch screen of described second embodiment enters one and comprises a separation layer 36.Described separation layer 36 is arranged between substrate 31 and insulation course 35.Described separation layer 36 is a conductive material layer.Described separation layer 36 passes described separation layer 36 for the electric signal sent or electromagnetic signal stopping drive electrode 32 and induction electrode 33.Described insulation course 35 depression deviated from the surface of described substrate 31 penetrates described insulation course 35.Guarded electrode 34 extends to separation layer 36 by described depression, and is electrically connected with described separation layer 36.Compared with the second embodiment, the projection-type capacitive touch screen of described 3rd embodiment is provided with separation layer 36.Described separation layer 36 can the electromagnetic interference (EMI) of electronic original part below less drive electrode 32 or induction electrode 33 pairs of substrates 31, simultaneously, described guarded electrode 34 is electrically connected with described separation layer 36, can described separation layer ground connection be passed through, thus the ground lead of described projection-type capacitive touch screen can be reduced.
Refer to Fig. 7, Fig. 7 is the cross-section structure enlarged diagram of projection-type capacitive touch screen of the present invention 4th embodiment.The projection-type capacitive touch screen of described 4th embodiment is substantially the same with the projection-type capacitive touch screen 1 of described first embodiment, its difference is: in the projection-type capacitive touch screen of described 4th embodiment, and guarded electrode 54 also comprises the first extension 541 and the second extension 542.Described first extension 541 extends to above drive electrode 52, and partly overlaps with described drive electrode 52 but be not electrically connected; Described second extension 542 extends to below induction electrode 53, and partly overlaps with described induction electrode 53 but be not electrically connected.Optionally, can also be that described first extension 541 extends to below drive electrode 52, and partly overlap with described drive electrode 52 but be not electrically connected; Described second extension 542 extends to above induction electrode 53, and partly overlaps with described induction electrode 53 but be not electrically connected.So, electric field line between drive electrode 52 and induction electrode 53 can be intercepted better.Preferably, drive electrode 52 and induction electrode 53 are formed respectively in twice different deposition-etch technique.Described first extension 541 is being formed with in a deposition-etch technique with described induction electrode 53; Described second extension 542 and described drive electrode 52 coexist in another deposition-etch technique and are formed.The method for making of the projection-type capacitive touch screen of described 4th embodiment comprises: provide a substrate 51; Described substrate 51 is formed at the upper surface of described substrate 51 by primary depositing etching technics the second extension 542 of drive electrode 52 and guarded electrode 54; Second extension 542 of described substrate 51, described drive electrode 52 and described guarded electrode 54 forms insulation course 55; Etch described insulation course 55 to make the insulation course 55 in corresponding described second extension 542 region forms the depression running through insulation course 55, and the second extension 542 described in exposed portion; Described insulation course 55 is formed at the upper surface of described substrate 51 by primary depositing etching technics the first extension 541 of induction electrode 53 and guarded electrode 54, and wherein said first extension 541 is electrically connected with described second extension 542 by described depression.So, in the process of projection-type capacitive touch screen manufacturing described 4th embodiment, without the need to increasing the deposition-etch technique once forming described guarded electrode 54 in addition, can raise the efficiency.
Refer to Fig. 8, Fig. 8 is the planar structure schematic diagram of projection-type capacitive touch screen of the present invention 5th embodiment.The projection-type capacitive touch screen of described 5th embodiment can with the above first, second, third or or the projection-type capacitive touch screen of the 4th embodiment substantially the same, its difference is: the projection-type capacitive touch screen 4 of the 5th embodiment comprises the multiple drive electrodes 42 being arranged in multirow and the multiple induction electrodes 43 being arranged in multiple row.Be electrically connected by the first connecting line 421 between two drive electrodes 42 that described every a line is adjacent; Be electrically connected by the second connecting line 431 between two induction electrodes 43 that described every a line is adjacent.Described multirow drive electrode 42 is arranged in a crossed manner with described multiple row induction electrode 43.Described drive electrode 421 is arranged between two row induction electrodes 43, and described induction electrode 43 is arranged between two row cutting electrodes 42 simultaneously; Described first connecting line 421 and described second connecting line 431 juxtaposition.Guarded electrode 44 is arranged in the gap between drive electrode 42 and induction electrode 43.Preferred further, described drive electrode 42 and induction electrode 43 are square.Described drive electrode 42 and induction electrode 43 close-packed arrays.
Better embodiment of the present invention discloses as above, but the present invention is not limited to this.As in any one embodiment in the first embodiment to the 4th embodiment, can also be: described induction electrode becomes matrix to arrange, the drive electrode of strip is arranged between adjacent rows induction electrode, and strip guarded electrode is arranged between adjacent row's induction electrode and a drive electrode; .
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a projecting type capacitor formula touch-screen, described touch-screen comprises substrate, drive electrode, induction electrode and guarded electrode, described substrate comprises upper surface, drive electrode and induction electrode are arranged on the upper surface, between described drive electrode and described induction electrode, there is gap, guarded electrode arranges described gap, and described guarded electrode is in order to shield the Inductance and Capacitance formed between described drive electrode and described induction electrode; It is characterized in that: described guarded electrode is greater than the thickness of described drive electrode and contiguous described guarded electrode one lateral edges of described induction electrode at the height in vertical described upper surface direction.
2. projecting type capacitor formula touch-screen as claimed in claim 1, it is characterized in that, described drive electrode has the first surface that deviates from substrate and the second surface in the face of substrate, and described induction electrode has the 3rd surface that deviates from substrate and the 4th surface in the face of substrate; The side that described guarded electrode deviates from substrate maintains an equal level or higher than the higher person in described first surface and described 3rd surface, and the side of described guarded electrode adjacent substrates maintains an equal level or lower than the junior in described second surface and described 4th surface.
3. projecting type capacitor formula touch-screen as claimed in claim 1 or 2, it is characterized in that, described drive electrode and described induction electrode are formed respectively in not homogeneous deposition-etch technique, and described guarded electrode is formed by the twice deposition-etch technique superposition forming described drive electrode and described induction electrode.
4. projecting type capacitor formula touch-screen as claimed in claim 2, it is characterized in that, described touch-screen also comprises an insulation course, described insulation course is arranged on the upper surface of described substrate, described drive electrode, induction electrode and guarded electrode are arranged on exhausted layer and deviate from the side that insulation course deviates from substrate, the region of the corresponding described guarded electrode of described insulation course has depression, and described guarded electrode extends in described depression.
5. projecting type capacitor formula touch-screen as claimed in claim 4, it is characterized in that, described touch-screen also comprises a separation layer, described separation layer is arranged between described insulation course and described substrate, described separation layer is a conductive material layer, described separation layer passes described separation layer for the electric signal or electromagnetic signal stopping drive electrode and induction electrode, and the depression of described insulation course penetrates described insulation course, and described guarded electrode is electrically connected with described separation layer by described depression.
6. the projecting type capacitor formula touch-screen as described in claim 4 or 5, is characterized in that, described drive electrode and described induction electrode are being formed with in a deposition-etch technique.
7. projecting type capacitor formula touch-screen as claimed in claim 6, is characterized in that, described touch-screen comprises the drive electrode of multiple one-tenth matrix arrangement and the induction electrode of many strips, and every bar induction electrode is arranged between adjacent rows drive electrode; Described guarded electrode growth strip, described guarded electrode is arranged between adjacent a line drive electrode and an induction electrode; Or described touch-screen comprises the induction electrode of multiple one-tenth matrix arrangement and the drive electrode of many strips, and every bar drive electrode is arranged between adjacent rows induction electrode; Described guarded electrode growth strip, described guarded electrode is arranged between adjacent a line induction electrode and a drive electrode.
8. projecting type capacitor formula touch-screen as claimed in claim 1, it is characterized in that, described guarded electrode has the below first extension partly overlapping with described drive electrode that extend to described drive electrode, and described guarded electrode also has the top second extension partly overlapping with described induction electrode that extend to described induction electrode; Or, described guarded electrode has the top first extension partly overlapping with described drive electrode that extend to described drive electrode, and described guarded electrode also has the below second extension partly overlapping with described induction electrode that extend to described induction electrode.
9. projecting type capacitor formula touch-screen as claimed in claim 8, it is characterized in that, the second extension of described drive electrode and described guarded electrode is formed in primary depositing etching technics; First extension of described induction electrode and described guarded electrode coexists in another deposition-etch technique and is formed.
10. projecting type capacitor formula touch-screen as claimed in claim 9, is characterized in that, described touch-screen comprises the multiple drive electrode being arranged in multirow and the multiple induction electrodes being arranged in multiple row.By the first connecting line electrical connection between two drive electrodes that described every a line is adjacent; By the second connecting line electrical connection between two induction electrodes that described every a line is adjacent.Described multirow drive electrode and described multiple row induction electrode arranged in a crossed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750317.2A CN104750326A (en) | 2013-12-26 | 2013-12-26 | Projection-type capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750317.2A CN104750326A (en) | 2013-12-26 | 2013-12-26 | Projection-type capacitive touch screen |
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| Publication Number | Publication Date |
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| CN104750326A true CN104750326A (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310750317.2A Pending CN104750326A (en) | 2013-12-26 | 2013-12-26 | Projection-type capacitive touch screen |
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| CN (1) | CN104750326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111722744A (en) * | 2019-03-21 | 2020-09-29 | 三星显示有限公司 | Display device |
-
2013
- 2013-12-26 CN CN201310750317.2A patent/CN104750326A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111722744A (en) * | 2019-03-21 | 2020-09-29 | 三星显示有限公司 | Display device |
| CN111722744B (en) * | 2019-03-21 | 2024-03-15 | 三星显示有限公司 | Display device |
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