Back to results
US 12,112,667 B2Granted
Pixel and display apparatus capable of controlling test function preliminary class
AssigneeSapien Semiconductors Inc.
InventorsJi Han Kim, Sung Ho Hwang, Ji Haeng Lee, Dae Young Jung
Life of this patent
Estimating the term…
Abstract
A pixel driving circuit includes a memory unit storing data based on a first signal and a second signal, a driver connected to a luminous element and supplying electric power to the luminous element based on the data stored in the memory unit, and a test controller controlling entry into a test mode in which it is tested whether the pixel driving circuit is defective, wherein the test controller generates a test mode activation signal based on the first signal and the second signal.
Claims11
A pixel driving circuit comprising:
- a memory storing data based on a first signal and a second signal;
- a driver connected to a luminous element and supplying electric power to the luminous element based on the data stored in the memory;
- and
- a test controller controlling entry into a test mode in which it is tested whether the pixel driving circuit is defective,
- wherein the test controller receives the first signal and the second signal and generates a test mode activation signal based on the first signal and the second signal,
- wherein the pixel driving circuit is included in each individual pixel and is configured to drive the individual pixel based on the first signal and the second signal.
3 more elements
A display apparatus comprising:
- a display panel including an arrangement of a plurality of pixel driving circuits forming rows and columns;
- a scan driving circuit outputting a first signal sequentially to the plurality of pixel driving circuits arranged in a row direction, from among the plurality of pixel driving circuits included in the display panel;
- and
- a data driving circuit outputting to the plurality of pixel driving circuits arranged in a column direction, from among the plurality of pixel driving circuits included in the display panel, a second signal related to a driving of luminous elements corresponding respectively to the plurality of pixel driving circuits,
- wherein each of the plurality of pixel driving circuits comprises:
- a memory storing data based on the first signal and the second signal;
- a driver connected to a luminous element and supplying electric power to the luminous element based on the data stored in the memory;
- and
- a test controller controlling entry into a test mode in which it is tested whether the pixel driving circuit is defective,
- wherein the test controller receives the first signal and the second signal and generates a test mode activation signal based on the first signal and the second signal
- wherein the pixel driving circuit is included in each individual pixel and is configured to drive the individual pixel according to the first signal and the second signal.
8 more elements
Dependencies are inferred from the claim text.