diff --git a/src/lgfx/v1/LGFXBase.cpp b/src/lgfx/v1/LGFXBase.cpp
index 2f132e07..ac616615 100644
--- a/src/lgfx/v1/LGFXBase.cpp
+++ b/src/lgfx/v1/LGFXBase.cpp
@@ -1441,6 +1441,27 @@ namespace lgfx
     endWrite();
   }
 
+  void LGFXBase::pushAlphaImage(int32_t x, int32_t y, int32_t w, int32_t h, pixelcopy_t *param)
+  {
+    uint32_t x_mask = 7 >> (param->src_bits >> 1);
+    param->src_bitwidth = (w + x_mask) & (~x_mask);
+
+    int32_t dx=0, dw=w;
+    if (0 < _clip_l - x) { dx = _clip_l - x; dw -= dx; x = _clip_l; }
+
+    if (_adjust_width(x, dx, dw, _clip_l, _clip_r - _clip_l + 1)) return;
+    param->src_x32 = param->src_x32_add * dx;
+
+    int32_t dy=0, dh=h;
+    if (0 < _clip_t - y) { dy = _clip_t - y; dh -= dy; y = _clip_t; }
+    if (_adjust_width(y, dy, dh, _clip_t, _clip_b - _clip_t + 1)) return;
+    param->src_y = dy;
+
+    startWrite();
+    _panel->writeImageARGB(x, y, dw, dh, param);
+    endWrite();
+  }
+
   void LGFXBase::make_rotation_matrix(float* result, float dst_x, float dst_y, float src_x, float src_y, float angle, float zoom_x, float zoom_y)
   {
     float rad = fmodf(angle, 360) * deg_to_rad;
diff --git a/src/lgfx/v1/LGFXBase.hpp b/src/lgfx/v1/LGFXBase.hpp
index ec96117e..a20369e0 100644
--- a/src/lgfx/v1/LGFXBase.hpp
+++ b/src/lgfx/v1/LGFXBase.hpp
@@ -568,9 +568,13 @@ namespace lgfx
 
     // T == bgra8888_t or argb8888_t
     template<typename T>
-    void pushImageARGB(int32_t x, int32_t y, int32_t w, int32_t h, const T* data)
+    void pushAlphaImage(int32_t x, int32_t y, int32_t w, int32_t h, const T* data)
     {
       auto pc = create_pc(data);
+
+      // not support 1, 2, 4, and palette mode.
+      if (pc.dst_bits < 8 || this->hasPalette()) { return; }
+
       if (pc.dst_bits > 16) {
         if (pc.dst_depth == rgb888_3Byte) {
           pc.fp_copy = pixelcopy_t::blend_rgb_fast<bgr888_t, T>;
@@ -584,14 +588,11 @@ namespace lgfx
           pc.fp_copy = pixelcopy_t::blend_rgb_fast<rgb332_t, T>;
         }
       }
-      pc.src_bitwidth = w;
-      pc.src_width = w;
-      pc.src_height = h;
-      startWrite();
-      _panel->writeImageARGB(x, y, w, h, &pc);
-      endWrite();
+      pushAlphaImage(x, y, w, h, &pc);
     }
 
+    void pushAlphaImage(int32_t x, int32_t y, int32_t w, int32_t h, pixelcopy_t *param);
+
 //----------------------------------------------------------------------------
 
     /// read RGB565 16bit color
diff --git a/src/lgfx/v1/panel/Panel_Device.cpp b/src/lgfx/v1/panel/Panel_Device.cpp
index f8c7c6b9..f876716d 100644
--- a/src/lgfx/v1/panel/Panel_Device.cpp
+++ b/src/lgfx/v1/panel/Panel_Device.cpp
@@ -178,7 +178,30 @@ namespace lgfx
   }
 
 //----------------------------------------------------------------------------
+  void Panel_Device::writeImageARGB(uint_fast16_t x, uint_fast16_t y, uint_fast16_t w, uint_fast16_t h, pixelcopy_t* param)
+  {
+    auto src_x = param->src_x;
+    auto bytes = param->dst_bits >> 3;
 
+    pixelcopy_t pc_read(nullptr, _write_depth, _read_depth);
+    pixelcopy_t pc_write(nullptr, _write_depth, _write_depth);
+    for (;;)
+    {
+      uint8_t* dmabuf = _bus->getDMABuffer((w+1) * bytes);
+      pc_write.src_data = dmabuf;
+      readRect(x, y, w, 1, dmabuf, &pc_read);
+      {
+        param->fp_copy(dmabuf, 0, w, param);
+        pc_write.src_x = 0;
+        writeImage(x, y, w, 1, &pc_write, true);
+      }
+      if (!--h) return;
+      param->src_x = src_x;
+      param->src_y++;
+      ++y;
+    }
+  }
+#if 0
   void Panel_Device::writeImageARGB(uint_fast16_t x, uint_fast16_t y, uint_fast16_t w, uint_fast16_t h, pixelcopy_t* param)
   {
     auto src_x = param->src_x;
@@ -237,6 +260,7 @@ namespace lgfx
       ++y;
     }
   }
+#endif
 
   void Panel_Device::copyRect(uint_fast16_t dst_x, uint_fast16_t dst_y, uint_fast16_t w, uint_fast16_t h, uint_fast16_t src_x, uint_fast16_t src_y)
   {