CN101581843A

CN101581843A - Touch control signal transmitting circuit for touching and controlling display

Info

Publication number: CN101581843A
Application number: CNA2008100995207A
Authority: CN
Inventors: 赖辉龙
Original assignee: Chi Hsin Electronics Corp
Current assignee: Chi Hsin Electronics Corp
Priority date: 2008-05-13
Filing date: 2008-05-13
Publication date: 2009-11-18

Abstract

The invention relates to a touch control signal transmitting circuit for touching and controlling a display, which is arranged on the inner surface of an upper base plate of a display. The transmitting circuit comprises a first patterned electrode layer and a second patterned electrode layer which are electrically insulated and are overlapped up and down. The first patterned electrode layer and the second patterned electrode layer respectively comprise a plurality of stepped electrodes; and moreover, the stepped electrodes of the first patterned electrode layer and the stepped electrodes of the second patterned electrode layer are alternately arranged, and each upper and lower opposite position forms an induction contact. Therefore, the whole touch control induction zone can be covered by only arranging a small amount of stepped electrodes, and thus, the using amount of joint liners and touch control IC pins can be reduced. In addition, because a plurality of induction contacts are still distributed densely in the touch control induction zone, the functions of quick detection and quick judgment can be maintained.

Description

The touching signals transmission circuit that is used for touch control display

Technical field

The present invention relates to the control structure of LCD, the more detailed touching signals transmission circuit that is meant a kind of touch-control liquid crystal display.

Background technology

General touch control display is to be assembled in the mode of coinciding up and down by a contact panel and a flat-panel screens to finish, only the display device structure of this kenel integral thickness of easily deriving strengthens the disappearance that increases the weight of with weight, run counter to towards compact trend is apparent with existing design concept, for this reason, industry is actively being sought the optimized while of display effect, also is devoted to reduce the development and Design of display thickness and weight.

The contact panel that designs with the capacitance touching control principle of induction, it is still the outer individual configurations that is independent of flat-panel screens, its basic structure comprises one first electrode layer and a second electrode lay that is provided with in the mode of being electrically insulated, this capacitance type touch-control structure is for providing position of touch judgement more accurately, must possess many contacts, therefore its first electrode layer and the second electrode lay are that linearity electrode by many careful arrangements constitutes, and the linearity electrode of first electrode layer and the linearity electrode of the second electrode lay are orthogonal thereto each other, form the contact according to this in the staggered place, aforementioned each linearity electrode also is electrically connected with a joint liner (bonding pad), and each joint liner again with the corresponding electric connection out of the ordinary of the pin (pin) of touch-control IC, so can obtain clearly to judge the effect of the contact position when display uses, yet, under the more situation of number of contacts, the number of representing joint liner and touch-control IC pin (pin) also will increase thereupon, so certainly will cause the difficulty of making, and increased overall weight indirectly, more make the cost of manufacture expenditure increase, therefore, for under the prerequisite that does not undermine finger contact position arbitration functions, can more simplify the making of touch-control sensing structure, and stride forward towards design sophistication direction, this is through detailed think of funiculus for a base, and generation of the present invention is arranged eventually.

Summary of the invention

The touching signals transmission circuit that provides a kind of touch control display to use, the quantity of joint liner capable of reducing using are provided fundamental purpose of the present invention.

The touching signals transmission circuit that provides a kind of touch control display to use is provided secondary objective of the present invention, and the upper substrate inner face that it is disposed at LCD can reach the purpose that reduces display integral thickness and weight.

Edge is to reach above-mentioned purpose, the touching signals transmission circuit that a kind of touch control display provided by the present invention is used is a upper substrate inner face of being located at a LCD, it comprises one first patterned electrode layer and one second patterned electrode layer, wherein this first patterned electrode layer includes many first electrodes that are set up in parallel, described first electrode with the ladder form towards same oblique extending to form, each first electrode has a upper contact in each turning point, and this second patterned electrode layer is to be formed at this first patterned electrode layer top in the mode of being electrically insulated, it includes many second electrodes that are set up in parallel, described second electrode also extends to form with the direction of extension of ladder form towards identical first electrode, each second electrode and relatively each first electrode is for being misplaced, and each second electrode has a lower contact over against a upper contact in each turning point.

Description of drawings

Fig. 1 is the touch control display cut-open view with touching signals transmission circuit of the present invention;

Fig. 2 is the first patterned electrode layer schematic layout pattern of preferred embodiment of the present invention;

Fig. 3 is disclosed in first patterned electrode layer top and covers first shading element;

Fig. 4 is disclosed in first shading element top and makes second patterned electrode layer;

Fig. 4 A is the second patterned electrode layer schematic layout pattern of preferred embodiment of the present invention;

Fig. 5 is the 5-5 direction cut-open view of Fig. 4;

Fig. 6 is disclosed in second patterned electrode layer top and covers second shading element;

Fig. 7 is the 7-7 direction cut-open view of Fig. 6;

Fig. 8 is the 8-8 direction cut-open view of Fig. 6.

[main element symbol description]

100 touch control displays

101 upper substrates, 102 infrabasal plates

10 chromatic filter layers

10a, 10b, 10c red, green, blue look filter unit

11 black matrix"s

The 11a first shading element 10b second shading element

The 11c area of isolation

12 thin film transistor (TFT)s, 14 liquid crystal

20 touching signals transmission circuits

22 first patterned electrode layer, 23 first electrodes

23a first direction electrode 23b second direction electrode

The 23c upper contact

24 second patterned electrode layer, 25 second electrodes

25a first direction electrode 25b second direction electrode

The 25c lower contact

26 joint liners

27 touch areas

Embodiment

Touch control display 100 shown in Figure 1 includes a upper substrate 101 and an infrabasal plate 102, wherein these upper substrate 101 inner faces dispose chromatic filter layer 10, these infrabasal plate 102 surfaces have a plurality of thin film transistor (TFT)s 12 that array is arranged that are, between this upper substrate 101 and the infrabasal plate 102 and be injected with liquid crystal 14.

Please cooperate Fig. 6 earlier, aforementioned chromatic filter layer 10 includes a plurality of red, green,

blue filter unit

10a, 10b, 10c and a black matrix" (Black Matrix, BM) 11, this black matrix" 11 is to make with the black resin material of insulation, its have many levels to the first shading element 11a vertical with many to the second shading element 11b, the described first shading element 11a and the second shading element 11b are staggered around forming most area of isolation 11c for described red, green,

blue filter unit

10a, 10b, the 10c configuration, and the touching signals transmission circuit 20 of present embodiment is before described filter unit is made, and defaults in this upper substrate 101 inner faces with these black matrix" 11 collocation making.

See also Fig. 2 and Fig. 4, this touching signals transmission circuit 20 includes one first patterned electrode layer 22 and one second patterned electrode layer 24, wherein, first patterned electrode layer 22 that Fig. 2 discloses includes many first electrodes 23 that are set up in parallel, each first electrode 23 be by multistage first direction electrode 23a and multistage second direction electrode 23b consecutively connected to each other form stepped, this first direction is vertical mutually with second direction in present embodiment, as shown in Figure 2, described first electrode 23 is to extend to form with upper right direction toward the lower-left, each first electrode 23 also forms a upper contact 23c in the junction of first direction electrode 23a and second direction electrode 23b, secondly, the two ends of each first electrode 23 one of them and joint liner 26 electrically connect, a relative end is also as a upper contact 23c, in addition, the spacing a of the horizontal direction of wantonly two first electrodes 23 and the spacing b of vertical direction also can be unequal as shown in this embodiment for equating; Afterwards, as shown in Figure 3, make the first shading element 11a of this black matrix" 11, and make the described first shading element 11a coat the major part of all first direction electrode 23a of this first patterned electrode layer 23, second direction electrode 23b is then for exposed.

Then, see also Fig. 4, shown in Figure 5, above this first patterned electrode layer 23 and the described first shading element 11a, make second patterned electrode layer 24 shown in Fig. 4 A again, this first patterned electrode layer 23 and second patterned electrode layer, 24 overlapped formation, one rectangular touch zone 27, this second patterned electrode layer 24 includes many second electrodes 25 that are set up in parallel, each second electrode 25 also includes multistage first direction electrode 25a and multistage second direction electrode 25b, described first direction electrode 25a and described second direction electrode 25b formation consecutively connected to each other are stepped, described second electrode 25 also is to extend to form from upper right turning left down with the direction that identical first electrode 23 stretches, each second electrode 25 also forms a lower contact 25c in the junction of first direction electrode 25a and second direction electrode 25b, and the two ends of each second electrode 25 one of them and joint liner 26 electrically connect, and a relative end is also as a lower contact 25c; In addition, shown in Fig. 4 A, the spacing a of the horizontal direction of wantonly two second electrodes 25 and the spacing b of vertical direction also can be unequal as shown in this embodiment for equating.

What must emphasize is, each of present embodiment second electrode 25 is that first electrode 23 of relative proximity is being misplaced on the left and right directions, the distance that is misplaced just is the size of each area of isolation 11c, in other words, the first direction electrode 25a part of second electrode 25 is overlapping with the first direction electrode 23a of first electrode 23, but because of the isolation of the first shading element 11a for being electrically insulated, the second direction electrode 23b of the second direction electrode 25b of second electrode 25 and first electrode 23 then is not overlapping the sending a telegraph property insulation of staggering each other, this design will make the lower contact 25c of each second electrode 25 just face a upper contact 23c, should be for promptly constituting a sense contact jointly over against upper contact 23c that concerns and lower contact 25c up and down; At last, the first shading element 11a and the second shading element 11b that make this black matrix" 11 are again coating first and second patterned electrode layer 22 that is formed in the touch area 27 respectively, all first direction electrode 23a of 24,25a and

second direction electrode

23b, 25b, or the second shading element 11b that only makes this black matrix" 11 is again coating first and second patterned electrode layer 22 that is formed in the touch area, all second direction electrode 23b of 24,25b, Fig. 6, Fig. 7 and Fig. 8 promptly represent to finish the final aspect of touching signals transmission circuit 20 and black matrix" 11 making.

In above-mentioned, the promptly common insulation course that constitutes one deck of the described first shading element 11a makes that second patterned electrode layer 24 is the tops that are formed at this first patterned electrode layer 22 in the mode of being electrically insulated.

It more than is the explanation of touching signals transmission circuit 20 each member of the present invention and relevant position thereof, from the above, the present invention will constitute the capacity cell of touch-control sensing, be that described first electrode 23 and second electrode 25 are made with the ladder kenel, therefore only need to use fewer purpose electrode can contain whole touch-control sensing district, its benefit of deriving is to have reduced the use number of joint liner, and related pin (pin) number that has reduced touch-control IC, to be of value to the cost that reduces the making display to this, and touching signals transmission circuit 20 of the present invention is upper substrate 101 inner faces that are configured in LCD, so need not to fold in addition to establish a contact panel, will improve the thickness and the weight issue of LCD integral body in view of the above in the lump.

In addition, if black matrix" 11 in the above-described embodiments is must use conductive material as black matrix" in response to the special displays design requirement time, only need this moment between first electrode 23 and the first shading element 11a, reach and set up an insulation course between second electrode 25 and the second shading element 11b and get final product.

The above only is a preferable possible embodiments of the present invention, uses the equivalent structure variation that instructions of the present invention and claim are done such as, ought to be included in the claim of the present invention.

Claims

1. touching signals transmission circuit that is used for touch control display is located at a upper substrate inner face of a LCD, it is characterized in that this touching signals transmission circuit comprises:

One first patterned electrode layer, this first patterned electrode layer include many first electrodes that are set up in parallel, and towards same oblique extending to form, each first electrode has a upper contact to described first electrode in each turning point with the ladder form; And

One second patterned electrode layer, be to be formed at this first patterned electrode layer top in the mode of being electrically insulated, and form a touch area with the overlapping region of this first patterned electrode layer, this second patterned electrode layer includes many second electrodes that are set up in parallel, described second electrode extends to form with the direction of extension of ladder form towards identical first electrode, relatively each first electrode is for being misplaced for each second electrode, and each second electrode has a lower contact over against a upper contact in each turning point.

2. the touching signals transmission circuit that is used for touch control display as claimed in claim 1 is characterized in that:

Each first electrode of this first patterned electrode layer includes multistage first direction electrode and multistage second direction electrode, and described first direction electrode and described second direction electrode are consecutively connected to each other, and forms this upper contact in the junction;

Each second electrode of this second patterned electrode layer includes multistage first direction electrode and multistage second direction electrode, and described first direction electrode and described second direction electrode are consecutively connected to each other, and forms this lower contact in the junction.

3. the touching signals transmission circuit that is used for touch control display as claimed in claim 2 is characterized in that: the first direction spacing of described wantonly two first electrodes or second electrode is to equate with the second direction spacing.

4. the touching signals transmission circuit that is used for touch control display as claimed in claim 2 is characterized in that: the first direction spacing and the second direction spacing of described wantonly two first electrodes or second electrode are unequal.

5. the touching signals transmission circuit that is used for touch control display as claimed in claim 2 is characterized in that: also include an insulation course, this insulation course is between this first patterned electrode layer and this second patterned electrode layer.

6. the touching signals transmission circuit that is used for touch control display as claimed in claim 2, it is characterized in that: the upper substrate inner face of this LCD disposes a chromatic filter layer, this chromatic filter layer includes a plurality of filter units and a black matrix", this black matrix" is in order to separate described filter unit, this black matrix" has first shading element of many first directions, described first shading element is coating this first patterned electrode layer all first direction electrodes in the touch area, aforementioned first shading element is promptly common to constitute this insulation course, and second shading element of many second directions is coating all second direction electrodes of this first and second patterned electrode layer in the touch area.

7. the touching signals transmission circuit that is used for touch control display as claimed in claim 6 is characterized in that: this first shading element is also coating all first direction electrodes of second patterned electrode layer in the touch area.

8. the touching signals transmission circuit of using as touch control display as described in the claim 3, it is characterized in that: this insulation course is that transparent material is made.