CN101308429B - Touch control type electro photoluminescence display panel - Google Patents

Touch control type electro photoluminescence display panel Download PDF

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Publication number
CN101308429B
CN101308429B CN200810133914XA CN200810133914A CN101308429B CN 101308429 B CN101308429 B CN 101308429B CN 200810133914X A CN200810133914X A CN 200810133914XA CN 200810133914 A CN200810133914 A CN 200810133914A CN 101308429 B CN101308429 B CN 101308429B
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substrate
display panel
touch
control type
touch control
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CN200810133914XA
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CN101308429A (en
Inventor
王朝珍
谢曜任
周恒生
贾邦强
蔡育铮
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AU Optronics Corp
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AU Optronics Corp
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Abstract

A touch-control electrical stimulation luminescent display panel comprises a substrate and a cover plate. The substrate comprises a pixel switching element, a signal reading element, an electrical stimulation luminescent device and an inductive pad. The pixel switching element and the electrical stimulation luminescent device are arranged in a display area of the substrate; the signal reading element and the inductive pad are arranged in a non-display area of the substrate. The cover plat comprises a first spacer, a touch-control spacer and a conductive layer. The first spacer is arranged at one side of the cover plate facing the substrate to maintain a fixed distance between the substrate and the cover plate; the touch-control spacer is arranged on the surface of the cover plate facing the substrate and is corresponding to the inductive pad; the conductive layer is arranged on the surface of the touch-control spacer facing the inductive pad. The invention provides a touch-control electrical stimulation luminescent display panel to reduce the thickness of the touch-control electrical stimulation luminescent display panel and endow the panel with multi-point touch control input function.

Description

Touch control type electro photoluminescence display panel
Technical field
The present invention relates to a kind of touch control type electro photoluminescence display panel, relate in particular to a kind of touch control type electro photoluminescence display panel that touch control component is integrated in display panel and supports the multi-point touch input.
Background technology
Electric exciting light emitting display panel, for example organic LED display panel has advantages such as autoluminescence, high color saturation and power saving, is applied in gradually on all types of electronic products, for example mobile phone, personal digital assistant and global position system etc.In addition, since on the market for the requirement of the size of electronic product towards compact development, therefore many electronic products no longer design the finger-impu system that occupies big quantity space, and attempt replacing keyboard wherein combination of touch control input and the practice of Presentation Function the most popular present especially input technology with other input mechanism.
Please refer to Fig. 1.Fig. 1 is the synoptic diagram of known touch control type electro photoluminescence display panel.As shown in Figure 1, known touch control type electro photoluminescence display panel 10 mainly is made of electric exciting light emitting display panel 20 and contact panel 30.Electric exciting light emitting display panel 20 comprises substrate 22, cover plate 24, and light-emitting component 26 is arranged between substrate 22 and the cover plate 24.Contact panel 30 is attached to the outside surface of cover plate 24, and it comprises first conductive layer 32, over cap 34, second conductive layer 36, and separation material 38.First conductive layer 32 is arranged on the outside surface of the cover plate 24 of electric exciting light emitting display panel 20; second conductive layer 36 is arranged on the inside surface of over cap 34, and over cap 34 has elasticity and the support by separation material 38 makes the cover plate 24 of electric exciting light emitting display panel 20 be maintained fixed spacing often.
When external force (for example finger) touching can make over cap 34 produce deformation when pushing over cap 34; and make the space change of the win conductive layer 32 and second conductive layer 36; can and calculate the input signal that this position produces by electric circuit inspection whereby, reach the effect of touch-control input.Yet, make because the electric exciting light emitting display panel of known touch control type electro photoluminescence display panel and contact panel are independent respectively, therefore the volume of the touch control type electro photoluminescence display panel after the assembling will significantly increase.In addition, known touch control type electro photoluminescence display panel is only supported single-point touch input (single touch) function and can't support multi-point touch input (multiple touch) function that therefore restriction to some extent on using for example can't be carried out drag kick.
Summary of the invention
One of purpose of the present invention is to provide a kind of touch control type electro photoluminescence display panel, with thickness that reduces touch control type electro photoluminescence display panel and the function of giving its multi-point touch input.
For achieving the above object, the invention provides a kind of touch control type electro photoluminescence display panel, it comprises substrate and cover plate.Definition has non-display area (sensing area) and viewing area on the substrate, and substrate comprises pixel switch element, signal read element, electro photo-luminescent apparatus and sensing pad.Pixel switch element and electro photo-luminescent apparatus are arranged in the viewing area of substrate, and signal read element and sensing pad are arranged in the non-display area of substrate.Electro photo-luminescent apparatus comprises first electrode, second electrode, and light-emitting component is arranged between first electrode and second electrode and first electrode and the electric connection of pixel switch element.Sensing pad and signal read element electrically connect.Cover plate and substrate are oppositely arranged, it comprises first separation material, touch-control separation material and conductive layer, wherein first separation material is arranged on the side of cover plate in the face of substrate, and be positioned at this non-display area, and make between substrate and the cover plate and keep constant spacing, the touch-control separation material is arranged on surface and the corresponding sensing pad of cover plate in the face of substrate, and conductive layer is arranged on the surface of touch-control separation material in the face of sensing pad.
In described touch control type electro photoluminescence display panel, also comprise the power supply signal line, be electrically connected to this second electrode.
In described touch control type electro photoluminescence display panel, wherein this electro photo-luminescent apparatus comprises oled device.
In described touch control type electro photoluminescence display panel, wherein this light-emitting component comprises electron transfer layer, organic luminous layer and hole transmission layer.
In described touch control type electro photoluminescence display panel, wherein this conductive layer covers the surface of this cover plate in the face of this substrate.
In described touch control type electro photoluminescence display panel, wherein this conductive layer covers the sidewall of this touch-control separation material.
In described touch control type electro photoluminescence display panel, wherein this first separation material has identical height in fact with this touch-control separation material.
In described touch control type electro photoluminescence display panel, wherein this substrate has first thickness to position that should first separation material.
In described touch control type electro photoluminescence display panel, also comprise at least one second separation material, be arranged on this cover plate in the face of a side of this substrate, and be positioned at this non-display area, and this substrate has second thickness to position that should second separation material.
In described touch control type electro photoluminescence display panel, wherein this substrate has the 3rd thickness to position that should the touch-control separation material.
In described touch control type electro photoluminescence display panel, wherein this first thickness is greater than this second thickness and the 3rd thickness.
In described touch control type electro photoluminescence display panel, wherein this touch-control separation material comprises elastic material.
In described touch control type electro photoluminescence display panel, also comprise frame glue, be connected between this substrate and this cover plate.
In described touch control type electro photoluminescence display panel, wherein this conductive layer electrically connects common current potential.
Touch control type electro photoluminescence display panel of the present invention is incorporated into electric exciting light emitting display panel inside with touch control component, therefore can significantly reduce the thickness of electric exciting light emitting display panel.
Description of drawings
Fig. 1 is the synoptic diagram of known touch control type electro photoluminescence display panel.
Fig. 2 and Fig. 3 are the synoptic diagram of a preferred embodiment of touch control type electro photoluminescence display panel of the present invention.
Fig. 4 is the synoptic diagram of another preferred embodiment of touch control type electro photoluminescence display panel of the present invention.
Wherein, description of reference numerals is as follows:
10 touch control type electro photoluminescences show 20 electric exciting light emitting display panels
Panel
22 substrates, 24 cover plates
26 light-emitting components, 30 contact panels
32 first conductive layers, 34 over caps
36 second conductive layers, 38 separation materials
50 touch control type electro photoluminescences show 52 substrates
Panel
The red time pixel region of 53 pixel region 53R
The green time pixel region 53B blue sub-pixels district of 53G
531 viewing areas, 532 non-display areas
54 cover plates, 55 pixel switch elements
56 signal read elements, 58 sensing pads
60 electro photo-luminescent apparatus, 62 first electrodes
64 second electrodes, 66 light-emitting components
66A electron transfer layer 66B organic luminous layer
66C hole transmission layer 68 first separation materials
The 68A first separation material base 70 touch-control separation materials
72 conductive layers, 74 second separation materials
The 74A second separation material base 76 frame glue
Embodiment
For making the those skilled in the art that are familiar with the technical field of the invention can further understand the present invention,
Hereinafter the spy enumerates several preferred embodiments of the present invention, and cooperates appended accompanying drawing, describes in detail of the present invention
Constitution content and the effect desiring to reach.
Please refer to Fig. 2 and Fig. 3.Fig. 2 and Fig. 3 are the synoptic diagram of a preferred embodiment of touch control type electro photoluminescence display panel of the present invention, wherein the pixel arrangement of the touch control type electro photoluminescence display panel of present embodiment is vertical bar formula (stripe type), Fig. 2 is the vertical view of touch control type electro photoluminescence display panel, Fig. 3 is the diagrammatic cross-section of the single dot structure of touch control type electro photoluminescence display panel, and, only show substrate among Fig. 2 for the clear pixel arrangement that demonstrates present embodiment.As Fig. 2 and shown in Figure 3, the touch control type electro photoluminescence display panel 50 of present embodiment comprises substrate 52 and cover plate 54, and wherein substrate 52 and cover plate 54 are for being oppositely arranged.Comprise multi-strip scanning line SL and many data line DL on the substrate 52, sweep trace SL and data line DL are staggered and define a plurality of pixel regions 53 on substrate 52, wherein each pixel region 53 for example comprises red time pixel region 53R, green time pixel region 53G and blue sub-pixels district 53B, and each time pixel region comprises viewing area 531 and non-display area 532, and non-display area 532 comprises the sensing area that is used for the sensing use.In addition, substrate 52 is provided with pixel switch element 55, signal read element 56, sensing pad 58, electro photo-luminescent apparatus 60, power supply signal line (power source line) P L, and signal read line (readout line) RL.Pixel switch element 55 can use the membrane transistor element with signal read element 56, and utilizes same process to be made.Pixel switch element 55 is arranged in the viewing area 531 of substrate 52 with electro photo-luminescent apparatus 60, and pixel switch element 55 is arranged on the below of electro photo-luminescent apparatus 60.Signal read element 56 is arranged in the non-display area 532 of substrate 52 with sensing pad 58, and the source electrode of sensing pad 58 and signal read element 56 electrically connects.In addition, signal read line RL then electrically connects with the drain electrode of signal read element 56, and can receive the control that sensing pad 58 senses and touch signal.
In the present embodiment, electro photo-luminescent apparatus 60 can be for example organic diode light-emitting device, but not can be other various EL part as limit.Electro photo-luminescent apparatus 60 comprises first electrode 62, second electrode 64, and light-emitting component 66, wherein first electrode 62 is as negative electrode in the present embodiment, and second electrode 64 is as anode, but not as limit, light-emitting component 66 then is arranged between first electrode 62 and second electrode 64.The light-emitting component 66 of present embodiment is selected organic light-emitting diode element for use, it mainly comprises electron transfer layer 66A, organic luminous layer 66B and hole transmission layer 66C, and alternative comprises retes such as electron injecting layer, hole injection layer, and wherein the material of retes such as electron transfer layer 66A, organic luminous layer 66B and hole transmission layer 66C can be selected any existing suitable material for use.In addition, light-emitting component 66 can use white light emitting element, and be matched with the mode that cover plate 54 or substrate 52 sides are provided with colored filter and reach the colored effect that shows, or light-emitting component 66 can directly use the light-emitting component of different colours, for example arrange in pairs or groups ruddiness, green glow and blue light emitting element, and do not need additionally to be provided with colored filter.
The touch control type electro photoluminescence display panel 50 of present embodiment is an example with luminous (top emitting) type upwards, therefore but first electrode 62 is selected the light-proof material of reflection ray for use, metal material for example, second electrode 64 is then selected transparent conductive material for use, but not as limit and the difference of visual light emission direction is changed.In addition, the drain electrode of pixel switch element 55 is electrically connected to first electrode 62, and power supply signal line PL is electrically connected to second electrode 64, whereby the GTG brightness of the voltage signal may command light-emitting component 66 that provides of power supply signal line PL and pixel switch element 55.
The cover plate 54 of touch control type electro photoluminescence display panel 50 comprises first separation material 68, touch-control separation material 70, conductive layer (common electrode) 72.First separation material 68 is arranged on cover plate 54 in the face of contacting in the non-display area 532 of a side of substrate 52 and with substrate 52, and substrate 52 is provided with the first separation material base 68A corresponding to the position of first separation material 68.First separation material 68 is as the usefulness of main gap thing (main spacer), and its function is often to make between substrate 52 and the cover plate 54 keeps constant spacing.Touch-control separation material 70 is arranged on surface and the corresponding sensing pad 58 of cover plate 54 in the face of substrate 52.Conductive layer 72 comprises transparent conductive material, it is arranged on the surface of touch-control separation material 70 in the face of sensing pad 58, electrically connect common current potential (common voltage), and look technology and consider conductive layer 72 and also optionally be arranged on cover plate 54 surface in the lump, and cover the sidewall of touch-control separation material 70 in the face of substrate 52.In addition, substrate 52 is coated with frame glue 76 with the outer peripheral areas of cover plate 54, so as to bonded substrate 52 and cover plate 54.
Conductive layer 72 and corresponding sensing pad 58 formation touch control components, when the user uses input media such as pointer or finger when the outside surface of cover plate 54 is imported, input media can be pushed a certain position of cover plate 54 and make the cover plate 54 that is positioned at this position produce deformation, and then the gap of the sensing pad 58 on the conductive layer 72 that makes touch-control separation material 70 surfaces and the substrate 52 dwindles or contacts and produce touching signals, and understand these touching signals of reception with the signal read element 56 that sensing pad 58 electrically connects, and this touching signals can be sent to interlock circuit via signal read line RL, utilize the touching signals that sweep time of sweep trace SL cooperates signal read line RL to read, and utilize algorithm to carry out coordinate computation, and detect the input signal of this position.Each touch control component of present embodiment is provided with signal read element 56, therefore can detect the input signal of a plurality of positions on the same time cover plate 54, so touch control type electro photoluminescence display panel of the present invention 50 can be supported function of multi-spot touch.
Cover plate 54 optionally is provided with second separation material 74 in addition, be arranged on cover plate 54 in the face of in the non-display area 532 of a side of substrate 52 and often do not contacting with substrate 52, and the position of substrate 52 corresponding second separation materials 74 is provided with the second separation material base 74A.Second separation material 74 is as the usefulness of auxiliary air gap thing (sub spacer), and its function causes cover plate 54 or other element impaired can avoiding cover plate 54 to produce excessive deformation when cover plate 54 is subjected to pressed by external force.In the present embodiment, first separation material 68, touch-control separation material 70 and second separation material 74 are preferably elastic material, and can use same technology to be made simultaneously, so first separation material 68, touch-control separation material 70 and second separation material 74 may have equal height under this situation.Because promptly need contacting to make between substrate 52 and the cover plate 54 often with substrate 52, first separation material 68 keeps constant spacing, touch-control separation material 70 does not contact with substrate 52 often can bring into play inducing function when cover plate 54 is subjected to pressed by external force, and second separation material 74 does not contact the effect that buffering is pushed of can bringing into play yet with substrate 52 often, therefore have under the embodiment of equal height at present embodiment first separation material 68, touch-control separation material 70 and second separation material 74, the mode that the present embodiment utilization changes the thickness of diverse location on the substrate 52 reaches above-mentioned requirements.In the present embodiment, substrate 52 has first thickness in the position of the first separation material base 68A of corresponding first separation material 68, substrate 52 has second thickness in the position of the second separation material base 74A of corresponding second separation material 74, substrate 52 has the 3rd thickness in the position of the sensing pad 58 of corresponding touch-control separation material 70, and first thickness is greater than second thickness and the 3rd thickness, second thickness then can greater than, be less than or equal to the 3rd thickness, the separation material 68 of winning is contacted with substrate 52, and second separation material 74 and touch-control separation material 70 keep not and substrate 52 state of contact.Yet embodiments of the present invention are not as limit, and the different gap of in other words above-mentioned first separation material 68, touch-control separation material 70 and second separation material 74 also can be reached by the practice that makes first separation material 68, touch-control separation material 70 and second separation material 74 have differing heights.
The touch control type electro photoluminescence display panel of the foregoing description is the vertical bar formula, but application of the present invention is as limit, and can be other form.Please refer to Fig. 4.Fig. 4 is the synoptic diagram of another preferred embodiment of touch control type electro photoluminescence display panel of the present invention.As shown in Figure 4, the pixel arrangement of the touch control type electro photoluminescence display panel of present embodiment is three gate formulas (tri-gate type), its pixel arrangement and previous embodiment are different, with three the same data line DL of the common connection of pixel, so design can be saved the power consumption of data, reaches whole effect of saving power consumption.Therefore other main elements such as pixel on-off element 55, signal read element 56, sensing pad 58, electro photo-luminescent apparatus 60, power supply signal line PL, and slightly change the position of signal read line RL first separation material 68, touch-control separation material 70 and second separation material 74 etc., but its function of bringing into play all vertical bar formula pixel arrangement with previous embodiment is identical, so no longer add to give unnecessary details at this.
In sum, touch control type electro photoluminescence display panel of the present invention is incorporated into electric exciting light emitting display panel inside with touch control component, therefore can significantly reduce the thickness of electric exciting light emitting display panel.In addition, touch control type electro photoluminescence display panel of the present invention is the light emitting-type that makes progress, and therefore can promote aperture opening ratio.In addition, touch control type electro photoluminescence display panel of the present invention can be supported the function of single-point and multi-point touch input, and can be applicable to the electric exciting light emitting display panel of various sizes.
The above only is the preferred embodiments of the present invention, and all equivalent variations and modifications of making according to claims of the present invention all should belong to covering scope of the present invention.

Claims (14)

1. touch control type electro photoluminescence display panel comprises:
Substrate, definition has non-display area and viewing area on this substrate, and this substrate comprises:
The pixel switch element is arranged in this viewing area of this substrate;
The signal read element is arranged in this non-display area of this substrate;
Electro photo-luminescent apparatus is arranged in this viewing area, and this electro photo-luminescent apparatus comprises first electrode, second electrode, and light-emitting component is arranged between this first electrode and this second electrode wherein this first electrode and this pixel switch element electric connection;
Sensing pad is arranged in this non-display area of this substrate, and electrically connects with this signal read element; And
Cover plate is oppositely arranged with this substrate, and this cover plate comprises:
At least one first separation material is arranged on this cover plate in the face of a side of this substrate, and is positioned at this non-display area, and makes between this substrate and this cover plate and keep constant spacing;
The touch-control separation material is arranged on this cover plate in the face of the surface of this substrate and to should sensing pad; And
Conductive layer is arranged on the surface of this touch-control separation material in the face of this sensing pad.
2. touch control type electro photoluminescence display panel as claimed in claim 1 also comprises the power supply signal line, is electrically connected to this second electrode.
3. touch control type electro photoluminescence display panel as claimed in claim 1, wherein this electro photo-luminescent apparatus comprises oled device.
4. touch control type electro photoluminescence display panel as claimed in claim 3, wherein this light-emitting component comprises electron transfer layer, organic luminous layer and hole transmission layer.
5. touch control type electro photoluminescence display panel as claimed in claim 1, wherein this conductive layer covers the surface of this cover plate in the face of this substrate.
6. touch control type electro photoluminescence display panel as claimed in claim 1, wherein this conductive layer covers the sidewall of this touch-control separation material.
7. touch control type electro photoluminescence display panel as claimed in claim 1, wherein this first separation material has identical height with this touch-control separation material.
8. touch control type electro photoluminescence display panel as claimed in claim 7, wherein this substrate has first thickness to position that should first separation material.
9. touch control type electro photoluminescence display panel as claimed in claim 8, also comprise at least one second separation material, be arranged on this cover plate in the face of a side of this substrate, and be positioned at this non-display area, and this substrate has second thickness to position that should second separation material.
10. touch control type electro photoluminescence display panel as claimed in claim 9, wherein this substrate has the 3rd thickness to position that should the touch-control separation material.
11. touch control type electro photoluminescence display panel as claimed in claim 10, wherein this first thickness is greater than this second thickness and the 3rd thickness.
12. touch control type electro photoluminescence display panel as claimed in claim 1, wherein this touch-control separation material comprises elastic material.
13. touch control type electro photoluminescence display panel as claimed in claim 1 also comprises frame glue, is connected between this substrate and this cover plate.
14. touch control type electro photoluminescence display panel as claimed in claim 1, wherein this conductive layer electrically connects common current potential.
CN200810133914XA 2008-07-15 2008-07-15 Touch control type electro photoluminescence display panel Active CN101308429B (en)

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Application Number Priority Date Filing Date Title
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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN102436107B (en) * 2009-03-26 2014-06-18 友达光电股份有限公司 Liquid crystal display device and control method thereof
CN102566837A (en) * 2010-12-17 2012-07-11 东莞联胜液晶显示器有限公司 Touch display device
CN103531106B (en) 2013-10-28 2015-06-03 京东方科技集团股份有限公司 Active matrix and organic light emission diode displaying back plate and active and organic light emitting diode displaying equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101109859A (en) * 2007-09-12 2008-01-23 友达光电股份有限公司 Touching control panel
CN101149502A (en) * 2007-11-02 2008-03-26 友达光电股份有限公司 Touch control type planar display and its producing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101109859A (en) * 2007-09-12 2008-01-23 友达光电股份有限公司 Touching control panel
CN101149502A (en) * 2007-11-02 2008-03-26 友达光电股份有限公司 Touch control type planar display and its producing method

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