diff --git a/README.md b/README.md
index a7f75e0..2b9fde1 100644
--- a/README.md
+++ b/README.md
@@ -1,32 +1,5 @@
-# LCD backlight test
+# LCD
 
-This program only turns on the LCD backlight GPIO.
+LCD driver project for zhaocaimao.
 
-It does not initialize SPI.
-It does not initialize the LCD controller.
-It does not write any pixel data.
-
-Set `LCD_PIN_BL` to the GPIO connected to the LCD `BLK` pin.
-Set `LCD_BL_ACTIVE_HIGH` to match the board.
-
-Build and flash:
-
-```powershell
-idf.py menuconfig
-idf.py build
-idf.py -p COMx flash
-```
-
-Expected result: the LCD backlight turns on and stays on.
-
-## Update image data
-
-Use this script to generate `main/eye_image.c` and `main/eye_image.h` from an
-image or GIF:
-
-```powershell
-C:\Users\28036\.cache\codex-runtimes\codex-primary-runtime\dependencies\python\python.exe D:\esp\Project\lcd\tools\gif_to_eye_image.py D:\esp\Project\lcd\source\eye2.bmp
-```
-
-For GIF files, use `--max-frames` or `--step` if the generated file is too
-large.
+The basic LCD driver and image rendering flow are complete, with support for full-screen rendering and partial refresh. `upper_app.h` and `upper_app.c` simulate the upper-layer interface for testing expression animations, icon overlays, and display update flow.