# US 2013/0155024 A1 · Touch pixel structure, touch pixel array substrate and touch display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155024 A1 - Document ID: US20130155024A1 - Status: Published application - Kind: A1 - Application number: 13/409,127 - Filed: 2012-03-01 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Assignees: Au Optronics Corporation - Inventors: Yueh-Hung Chung; Ya-Ling Hsu; Hsueh-Ying Huang; Yi-Ru Cheng - Web page: https://patentgrep.com/patent/US20130155024A1 ## CPC - G06F 3/0421: {by interrupting or reflecting a light beam, e.g. optical touch-screen} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch pixel array substrate suitable for a touch display panel includes a first substrate, scan lines, data lines, signal-control lines, read-out lines, voltage-shielding lines, active devices, pixel electrodes, and photo-sensing units. The scan lines, the data lines, the signal-control lines, the read-out lines, and the voltage-shielding lines are located on the first substrate. Each of the read-out lines is located between two adjacent data lines. Each of the voltage-shielding lines is located between one of the read-out lines and one of the data lines. Both sides of each of the read-out lines are adjacent to two voltage-shielding lines. The photo-sensing units are located on the first substrate and electrically connected to the scan lines, the signal-control lines, and the read-out lines correspondingly. A touch display panel and a touch pixel structure are also provided. ## Claims ### Claim 1 A touch pixel array substrate for a touch display panel, the touch pixel array substrate comprising: a first substrate; a plurality of data lines, a plurality of read-out lines, and a plurality of voltage-shielding lines, the data lines, the read-out lines, and the voltage-shielding lines being substantially disposed in parallel on the first substrate, wherein each of the read-out lines is located between two of the data lines adjacent to the each of the read-out lines, each of the voltage-shielding lines is located between one of the read-out lines and one of the data lines, and two sides of each of the read-out lines are adjacent to two of the voltage-shielding lines; a plurality of scan lines and a plurality of signal-control lines, the scan lines and the signal-control lines being located on the first substrate and respectively intersecting the data lines, the read-out lines, and the voltage-shielding lines; a plurality of active devices located on the first substrate and electrically connected to the scan lines and the data lines correspondingly; a plurality of pixel electrodes located on the first substrate and electrically connected to the active devices correspondingly; and a plurality of photo-sensing units located on the first substrate and electrically connected to the scan lines, the signal-control lines, and the read-out lines correspondingly. ### Claim 2 (depends on 1) The touch pixel array substrate as recited in claim 1, wherein each of the photo-sensing units is located between two of the data lines adjacent to the each of the photo-sensing units. ### Claim 3 (depends on 1) The touch pixel array substrate as recited in claim 1, wherein each of the photo-sensing units comprises: a photosensitive transistor, including a gate electrode, a source electrode and a drain electrode, the gate electrode of the photosensitive transistor being connected to one of the scan lines corresponding to the gate electrode of the photosensitive transistor, the source electrode of the photosensitive transistor being connected to one of the signal-control lines corresponding to the source electrode of the photosensitive transistor; a read-out transistor, including a gate electrode, a source electrode and a drain electrode, the gate electrode of the read-out transistor being connected to one of the scan lines corresponding to the gate electrode of the read-out transistor, the drain electrode of the read-out transistor being connected to one of the read-out lines corresponding to the drain electrode of the read-out transistor; and a capacitor, including a first electrode and a second electrode, the first electrode of the capacitor being connected to the source electrode of the read-out transistor and the drain electrode of the photosensitive transistor, the second electrode of the capacitor being connected to one of the voltage-shielding lines corresponding to the second electrode of the capacitor. ### Claim 4 (depends on 3) The touch pixel array substrate as recited in claim 3, wherein the capacitor further comprises a third electrode, and the first electrode of the capacitor connected to the source electrode of the read-out transistor is sandwiched between the second electrode of the capacitor and the third electrode of the capacitor. ### Claim 5 (depends on 4) The touch pixel array substrate as recited in claim 4, wherein an area of the third electrode of the capacitor is greater than an area of the first electrode of the capacitor. ### Claim 6 (depends on 3) The touch pixel array substrate as recited in claim 3, wherein a width-to-length ratio of an area between the source electrode and the drain electrode of the photosensitive transistor is greater than a width-to-length ratio of an area between the source electrode and the drain electrode of the read-out transistor. ### Claim 7 (depends on 3) The touch pixel array substrate as recited in claim 3, wherein the source electrode and the drain electrode of the photosensitive transistor include two parallel straight lines, and the drain electrode of the read-out transistor includes an U shape. ### Claim 8 (depends on 1) The touch pixel array substrate as recited in claim 1, further comprising at least one repair line disposed on the first substrate and extended to a photo-sensing circuit board connected to the first substrate. ### Claim 9 A touch display panel comprising: a first substrate; a plurality of data lines, a plurality of read-out lines, and a plurality of voltage-shielding lines, the data lines, the read-out lines, and the voltage-shielding lines being substantially disposed in parallel on the first substrate, wherein each of the read-out lines is located between two of the data lines adjacent to the each of the read-out lines, each of the voltage-shielding lines is located between one of the read-out lines and one of the data lines, and two sides of each of the read-out lines are adjacent to two of the voltage-shielding lines; a plurality of scan lines and a plurality of signal-control lines, the scan lines and the signal-control lines being located on the first substrate and respectively intersecting the data lines, the read-out lines, and the voltage-shielding lines; a plurality of active devices located on the first substrate and electrically connected to the scan lines and the data lines correspondingly; a plurality of pixel electrodes located on the first substrate and electrically connected to the active devices correspondingly; a plurality of photo-sensing units located on the first substrate and electrically connected to the scan lines, the signal-control lines, and the read-out lines correspondingly; a second substrate disposed opposite to the first substrate; and a display medium disposed between the first substrate and the second substrate. ### Claim 10 (depends on 9) The touch display panel as recited in claim 9, wherein each of the photo-sensing units is located between two of the data lines adjacent to the each of the photo-sensing units. ### Claim 11 (depends on 9) The touch display panel as recited in claim 9, wherein each of the photo-sensing units comprises: a photosensitive transistor, including a gate electrode, a source electrode and a drain electrode, the gate electrode of the photosensitive transistor being connected to one of the scan lines corresponding to the gate electrode of the photosensitive transistor, a source electrode of the photosensitive transistor being connected to one of the signal-control lines corresponding to the source electrode of the photosensitive transistor; a read-out transistor, including a gate electrode, a source electrode and a drain electrode, the gate electrode of the read-out transistor being connected to one of the scan lines corresponding to the gate electrode of the read-out transistor, a drain electrode of the read-out transistor being connected to one of the read-out lines corresponding to the drain electrode of the read-out transistor; and a capacitor, including a first electrode and a second electrode, the a first electrode of the capacitor being connected to a source electrode of the read-out transistor and a drain electrode of the photosensitive transistor, a second electrode of the capacitor being connected to one of the voltage-shielding lines corresponding to the second electrode of the capacitor. ### Claim 12 (depends on 11) The touch display panel as recited in claim 11, wherein the capacitor further comprises a third electrode, and the first electrode of the capacitor connected to the source electrode of the read-out transistor is sandwiched between the second electrode of the capacitor and a third electrode of the capacitor. ### Claim 13 (depends on 12) The touch display panel as recited in claim 12, wherein an area of the third electrode of the capacitor is greater than an area of the first electrode of the capacitor. ### Claim 14 (depends on 11) The touch display panel as recited in claim 11, wherein a width-to-length ratio of an area between the source electrode and the drain electrode of the photosensitive transistor is greater than a width-to-length ratio of an area between the source electrode and the drain electrode of the read-out transistor. ### Claim 15 (depends on 11) The touch display panel as recited in claim 11, wherein the source electrode and the drain electrode of the photosensitive transistor include two parallel straight lines, and the drain electrode of the read-out transistor includes an U shape. ### Claim 16 (depends on 9) The touch display panel as recited in claim 9, further comprising at least one repair line disposed on the first substrate and extended to a photo-sensing circuit board connected to the first substrate. ### Claim 17 (depends on 9) The touch display panel as recited in claim 9, wherein the display medium comprises an organic electroluminescent layer or a liquid crystal layer. ### Claim 18 (depends on 9) The touch display panel as recited in claim 9, further comprising an opposite electrode disposed on the second substrate. ### Claim 19 A touch pixel structure for a touch display panel including a first substrate, the touch pixel structure comprising: a first data line, a second data line, a read-out line, a first voltage-shielding line, and a second voltage-shielding line, the first data line, the second data line, the read-out line, the first voltage-shielding line, and the second voltage-shielding line being substantially disposed in parallel on the first substrate, wherein the read-out line is located between the first data line and the second data line adjacent to the read-out line, the first voltage-shielding line and the second voltage-shielding line are respectively located between the read-out line and the first data line and between the read-out line and the second data line, and two sides of the read-out line are adjacent to the first voltage-shielding line and the second voltage-shielding line; a scan line and a signal-control line, the scan line and the signal-control line being located on the first substrate and respectively intersecting the first data line, the second data line, the read-out line, the first voltage-shielding line, and the second voltage-shielding line; a first active device and a second active device both located on the first substrate and electrically connected to the scan line, the first data line, and the second data line correspondingly; a first pixel electrode and a second pixel electrode both located on the first substrate and electrically connected to the first active device and the second active device correspondingly; and a photo-sensing unit located on the first substrate and electrically connected to the scan line, the signal-control line, and the read-out line correspondingly.