Touch panel and touch display apparatus

Patent metadata

Field	Value
Publication number	US-2016283012-A1
Application number	US-201414652427-A
Country	US
Kind code	A1
Filing date	Sep 16, 2014
Priority date	Jun 5, 2014
Publication date	Sep 29, 2016
Grant date	—

Abstract

The present disclosure relates to a touch panel and a touch display apparatus. The touch panel comprises a glass substrate, a solar cell panel located at a side of the glass substrate and comprising a plurality of solar cell modules, n sensing lines in a first direction and m sensing lines in a second direction for carrying the electric power converted by the solar cell panel, and a detection unit for detecting the electric currents or voltages on the sensing lines in the first direction and the sensing lines in the second direction and for determining a touch region of a touch object based on a variation in the electric currents or voltages, wherein each of the n sensing lines in the first direction and the m sensing lines in the second direction connects the individual solar cell modules in the respective direction in series, and m and n are positive integers. The number of the wires connected in the touch panel of the present disclosure is reduced, and a lightweight touch screen is achieved.

First claim

1 - 17 . (canceled)

18 . A touch panel, comprising:
a glass substrate; a solar cell panel located at a side of the glass substrate and comprising a plurality of solar cell modules, the plurality of solar cell modules being arranged in a grid having a plurality of rows aligned in a first direction and a plurality of columns aligned in a second direction; a plurality of sensing lines in the first direction and a plurality of sensing lines in the second direction for transmitting electric power generated by the solar cell modules of the solar cell panel; a detection unit for measuring the electric power transmitted by the sensing lines in the first and second directions; and a touch region of a touch object determined by the detection unit based on an electric characteristic measured by the detecting unit; wherein each sensing line of the plurality of sensing lines in the first direction connects the individual solar cell modules in a row of solar cell modules in series; wherein each sensing line of the plurality of sensing lines in the second direction connects the individual solar cell modules in a column of solar cell modules in series; and wherein the electric characteristic comprises at least one of a current measurement and a voltage measurement.

19 . The touch panel of claim Error! Reference source not found., wherein a working light source is selected by the detection unit from the group consisting of an external light source and an internal light source based on the electric characteristic.

20 . The touch panel of claim 19 ,
wherein the external light source is selected as the working light source when the electric characteristic is greater than a first electric characteristic threshold and the internal light source is deactivated; wherein the internal light source is selected as the working light source when the electric characteristic is not greater than the first electric characteristic threshold and the internal light source is deactivated; wherein the external light source is selected as the working light source when the electric characteristic is greater than a second electric characteristic threshold and the internal light source is activated; and wherein the internal light source is selected as the working light source when the electric characteristic is not greater than the second electric characteristic threshold and the internal light source is activated.

21 . The touch panel of claim 19 ,
wherein the touch region is defined by at least one sensing line in the first direction and at least one sensing line in the second direction each having a smaller electric characteristic when the internal light source is deactivated; and wherein the touch region is defined by at least one sensing line in the first direction and at least one sensing line in the second direction each having a larger electric characteristic when the internal light source is activated.

22 . The touch panel of claim 21 ,
wherein the smaller electric characteristic is defined by the at least one sensing line in the first direction and the at least one sensing line in the second direction each having an electric characteristic below a first predetermined characteristic threshold; and wherein the larger electric characteristic is defined by the at least one sensing line in the first direction and the at least one sensing line in the second direction each having an electric characteristic above a second predetermined characteristic threshold.

23 . The touch panel of claim 21 ,
wherein the smaller electric characteristic is defined by the at least one sensing line in the first direction and the at least one sensing line in the second direction each having an electric characteristic that decreases a first predetermined amount below an initial characteristic measurement; and wherein the larger electric characteristic is defined by the at least one sensing line in the first direction and the at least one sensing line in the second direction each having an electric characteristic that increases a second predetermined amount above the initial characteristic measurement.

24 . The touch panel of claim 21 ,
wherein the touch region is defined by the solar cell modules connected in series by only one sensing line in at least one of the first direction and second direction when only one sensing line in at least one of the first direction and the second direction has a smaller electric characteristic; wherein the touch region is defined by the solar cell modules connected in series by only one sensing line in at least one of the first direction and second direction when only one sensing line in at least one of the first direction and the second direction has a larger electric characteristic.

25 . A touch display apparatus comprising:
a display panel having a plurality of pixel electrodes; and a touch panel, comprising:
a glass substrate;
a solar cell panel located at a side of the glass substrate and comprising a plurality of solar cell modules, the plurality of solar cell modules being arranged in a grid having a plurality of rows aligned in a first direction and a plurality of columns aligned in a second direction;
a plurality of sensing lines in the first direction and a plurality of sensing lines in the second direction for transmitting electric power generated by the solar cell modules of the solar cell panel;
a detection unit for measuring the electric power transmitted by the sensing lines in the first and second directions; and
a touch region of a touch object determined by the detection unit based on an electric characteristic measured by the detecting unit;
wherein each sensing line of the plurality of sensing lines in the first direction connects the individual solar cell modules in a row of solar cell modules in series;
wherein each sensing line of the plurality of sensing lines in the second direction connects the individual solar cell modules in a column of solar cell modules in series; and
wherein the electric characteristic comprises at least one of a current measurement and a voltage measurement; and
wherein the plurality of solar cell modules of the touch panel are projected orthographically onto the pixel electrodes of the display panel.

26 . The touch display apparatus of claim 25 , wherein the display panel further comprises a display pixel region and the touch panel is disposed proximate and above the display pixel region.

27 . The touch display apparatus of claim 26 , wherein the projection of each of the solar cell modules of the touch panel corresponds to the projection of at least one pixel electrode of the display panel, and the projection of each pixel electrode corresponds to the projection of only one solar cell module.

28 . The touch display apparatus of claim 26 , wherein the touch display apparatus further comprises an electric power storage device into which the electric power generated by the solar cell panel is transmitted by the touch panel via the sensing lines in the first direction and the sensing lines in the second direction.

29 . The touch display apparatus of claim 28 , wherein the touch panel transmits electric power directly to the display panel when the electric power storage device is in a full state.

30 . The touch display apparatus of claim 25 , wherein the display panel further comprises a backlight and the touch panel is disposed proximate and above the backlight.

31 . The touch display apparatus of claim 30 , wherein the projection of each of the solar cell modules of the touch panel corresponds to the projection of at least one pixel electrode of t

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co

Inventors

• Long Qingde

Classifications

• H10F19/50

  Integrated devices comprising at least one photovoltaic cell and other types of semiconductor or solid-state components (H10F19/75 takes precedence) · CPC title

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/044

  by capacitive means · CPC title

• H01L27/142

  Electricity · mapped topic